Noun
(linguistics) A linguistic form class whose members are words.
Synonym: lexical category
(linguistics) A linguistic form or structure class whose members are words.
Synonym: part of speech
I'm reluctant to use the word class so much. Timothy West
A phrase typically serves the same function as a word from some particular word class. Source: Internet
Nouns Nouns form the largest English word class. Source: Internet
On the other hand, some words belong to more than one word class. Source: Internet
Prepositions Prepositions form a closed word class, although there are also certain phrases that serve as prepositions, such as in front of. Source: Internet
Prepositions Prepositions (предлози, predlozi) are part of the closed word class that are used to express the relationship between the words in a sentence. Source: Internet