come in vs interpose

come in and interpose both are verbs.

Word	Noun	Adjective	Verb	Adverb
come in	No	No	Yes	No
interpose	No	No	Yes	No

As verbs, come in and interpose are synonyms defined as:

Other synonyms of come in include inject, interject, put in, throw in.

come in (verb)	interpose (verb)
take a place in a competition; often followed by an ordinal	to insert between other elements
to insert between other elements	to put forth by way of intervention
be received	be or come between
to come or go into	get involved, so as to alter or hinder an action, or through force or threat of force
come into fashion; become fashionable