Because = conjunction
of = preposition
the = adjective, article
approaching = adjective
storm = noun
all = pronoun
picnickers = noun
gathered = verb
their = adjective/possessive pronoun
belongings = noun
and = conjunction
ran = verb
to = preposition
shelter = adjective
houses = noun
A conjunction joins words, phrases, or clauses together. A preposition tells where one noun is in relation to another. An adjective describes a noun. A noun is a person, place, thing, or idea. A pronoun takes the place of a noun. A verb is an action word.