Function words which signal nouns.
5.
Conjunctions:
work as coordination of linguistic forms of syntactic units having
equal value
6.
Subordinators:
Connect dependent clauses and include words like: because,
after, as well as relative pronouns
7.
Interrogatives:
Operate in the formation of questions and include words like
when, where, why, how and so on: as well as – the interrogative
pronouns which, what, who
39