assembly vs gathering

assembly and gathering both are nouns.

Word	Noun	Adjective	Verb	Adverb
assembly	Yes	No	No	No
gathering	Yes	No	No	No

As nouns, assembly and gathering are synonyms defined as:

Other synonyms of assembly include assemblage.

As nouns, gathering is a hypernym of assembly; that is, gathering is a word with a broader meaning than assembly:

Other hypernyms of assembly include assemblage.

assembly (noun)	gathering (noun)
the social act of assembling	the social act of assembling
the act of constructing something (as a piece of machinery)	the act of gathering something
a group of machine parts that fit together to form a self-contained unit	sewing consisting of small folds or puckers made by pulling tight a thread in a line of stitching
a public facility to meet for open discussion	a group of persons together in one place
a unit consisting of components that have been fitted together
a group of persons who are gathered together for a common purpose