Tiu or Ĝi?

Both tiu and ĝi can refer to a known singular thing, so English it, that, and that one do not give a dependable answer. The difference is discourse work. Ĝi is an ordinary third-person pronoun: it keeps talking about an established referent. Tiu is a demonstrative U-correlative: it identifies or selects one individual, often among alternatives, points it out, contrasts it, or restores clarity.

This is not mainly a near-versus-far contrast. Proximity can be added with ĉi—tiu ĉi or ĉi tiu—but plain tiu already does the identifying work. Unless marked otherwise, the uses below are neutral in speech and writing.

Use ĝi to continue an established referent

Once a singular object, animal, idea, or other nonhuman referent is active in the conversation, ĝi is the unmarked way to mention it again. It does not ask the listener to choose among candidates.

The forms are ĝi as subject, ĝin as object, and ĝia as possessive adjective. There is no plural ĝij: use ili for several established referents.

English often uses that merely to continue a topic, especially in conversation: I bought a lamp. That's very bright. Esperanto normally prefers ĝi when the second sentence simply predicates something about the same lamp: Mi aĉetis lampon. Ĝi estas tre hela.

Use tiu to select or point out an individual

Tiu presents one identifiable member of a set. It can determine a following noun—tiu libro—or stand alone when the omitted noun is recoverable—tiu “that one.”

The U-ending marks an individual, whether a person, object, or other countable entity. Tiu can take plural and accusative endings: tiu, tiun, tiuj, tiujn. It is itself a determiner, so do not combine it with la.

The U-correlative paradigm explains the full morphology. The important choice here is pragmatic: tiu tells the listener “identify this particular one.”

Minimal contrast: continuation versus reselection

The same object can be referred to with either form, but the message changes.

The first sentence establishes one jacket, and ĝi continues it. The second keeps three jackets in play, and tiu verda selects one by a visible property. Replacing tiu with ĝi in the second version would force the context to supply one already established antecedent; it would no longer perform the selection.

Likewise, a shop assistant may point and ask:

Here tiun selects the small suitcase, while ĝi refers back neutrally to the already mentioned large one. This short exchange shows the two forms doing different jobs in one sentence.

Tiu can repair ambiguous reference

When two singular participants are available, a bare personal pronoun may be unclear. Established Esperanto often uses a personal pronoun for the previous subject and tiu for another participant from the previous clause.

In this context tiu points back to Leono, the nonsubject participant. Ŝi would naturally continue Marta. This is a strong clarity tendency, not a mechanical rule that overrides meaning; repeat the noun whenever real ambiguity remains.

In the second sentence, ĝi most readily continues the subject la aŭto, though context could compete. In safety-critical or technical writing, write la aŭto or la buso again rather than relying on that tendency. The dedicated page on pronoun ambiguity gives fuller repair strategies.

People, animals, and modern usage status

Tiu can identify a person without marking sex: Tiu, kiu telefonis, ne lasis nomon “The person who called left no name.” When it stands alone without contextual clues, a U-correlative is often understood as a person. Because tiu is demonstrative, however, repeatedly using it for a present person may sound distancing—like English that person. Use a name or the person's chosen pronoun for ordinary continuity.

Traditional standard ĝi refers to things, abstract matters, animals, and very young children when sex is irrelevant. For a known pet, speakers may also choose li or ŝi when they treat sex as salient. These choices are accepted variation in viewpoint.

Since the 2010s, some speakers have extended ĝi to people of any age as a sex-neutral pronoun. This practice, often called ĝiismo, is a modern, disputed innovation rather than part of the broadly shared neutral norm. It may sound objectifying or offensive, especially if imposed on someone who does not use it. For a person, follow that person's stated pronoun; otherwise, tiu persono, a repeated role noun, or another established strategy is safer. See third-person pronoun choices.

Do not use either form as English dummy “it”

English needs it in weather and extraposition sentences, but Esperanto often has no grammatical subject there. Ĝi pluvas is not the neutral Esperanto equivalent of it is raining; simply say Pluvas. For a whole proposition, tio—the O-correlative meaning “that matter”—is normally more appropriate than either tiu or ĝi.

Tiu asks “which individual?”; tio packages a thing, fact, or proposition. Ĝi refers back to a suitable established nominal referent. English that can cover all three functions, so parse the Esperanto role before choosing.

A compact decision path

1. If English it is only a dummy subject, use neither form: Pluvas or Estas malfrue.
2. If the reference is to a whole fact, utterance, or situation, first test tio.
3. If the listener must identify, select, contrast, or point out one individual, choose tiu (or tiuj for several).
4. If one suitable singular nonhuman referent is already active and no selection is intended, choose ĝi; for several, choose ili.
5. For a person, use that person's pronoun, repeat the name or role when needed, and reserve tiu for genuine identification or contrast.

This sequence prevents the English spelling it or that from deciding too early. First identify the discourse task, then choose the Esperanto form that performs it.

Common Mistakes

Using ĝi before a noun

Adding la before a demonstrative determiner

Using ĝi to select among alternatives

Importing English dummy it

Making ĝi plural

Key Takeaways

• Use ĝi for unmarked continuation of one established nonhuman referent.
• Use tiu to identify, select, contrast, point out, or disambiguate an individual.
• Tiu takes -j and -n; plural personal reference uses ili, not a plural of ĝi.
• Use subjectless clauses for English dummy it and tio for a whole fact or proposition.