trash collection vs garbage pickup

trash collection and garbage pickup both are nouns.

Word	Noun	Adjective	Verb	Adverb
trash collection	Yes	No	No	No
garbage pickup	Yes	No	No	No

As nouns, trash collection and garbage pickup are synonyms defined as:

trash collection and garbage pickup: the collection and removal of garbage

Other synonyms of trash collection include garbage collection, trash pickup.

trash collection (noun)	garbage pickup (noun)
the collection and removal of garbage	the collection and removal of garbage