Questions & Answers about La tapeto estas sub la plafono.
La is the Esperanto definite article, the equivalent of the in English.
It appears before both nouns because the sentence is talking about specific things:
- la tapeto = the wallpaper
- la plafono = the ceiling
A useful point for learners: la never changes. It stays la for singular, plural, and all genders.
In Esperanto, nouns normally end in -o.
So:
- tapeto is a noun
- plafono is a noun
This is one of the most regular parts of Esperanto grammar. If you see a word ending in -o, it is usually a noun.
Not in this case.
Although Esperanto does have a real diminutive suffix -et-, not every sequence of letters e-t inside a word is a suffix. In tapeto, the root is learned as tapet-, and then -o is the noun ending.
So you should treat tapeto as a whole vocabulary item, not as tap- + -et- + -o.