Quantity and everyday abstract nouns

How much

little, not much
az is *little, not much* — the opposite of *çok*. too much, extra
fazla is *too much* or *extra*: more than is wanted, not simply a large amount.

Az yedim — I ate little. Fazla yedim — I ate too much.

Nouns you will need constantly

nounmeaningits verb, if any
help, aid
yardım
helpyardım etmek — to help
problem
sorun
problem
moment
an
moment
topic, subject
konu
topic, subject
importance
önem
importanceönem vermek — to attach importance
power, strength
güç
power, strength
trust / safety, security
güven
trustgüvenmek — to trust

Note that importance

önem is the noun behind the adjective önemli (important) you already know, and power, strength
güç doubles as an adjective meaning difficult in formal writing — though zor is the everyday word.