session vs get together

session and get together both are nouns.

Word	Noun	Adjective	Verb	Adverb
session	Yes	No	No	No
get together	Yes	No	Yes	No

As nouns, get together is a hypernym of session; that is, get together is a word with a broader meaning than session:

Other hypernyms of session include meeting.

session (noun)	get together (noun)
a meeting devoted to a particular activity	a small informal social gathering
a meeting for execution of a group's functions
a meeting of spiritualists
the time during which a school holds classes

session (verb)	get together (verb)
	get together socially or for a specific purpose
	become part of; become a member of a group or organization
	get people together