come in vs interject

come in and interject both are verbs.

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

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

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

come in (verb)	interject (verb)
take a place in a competition; often followed by an ordinal	to insert between other elements
to insert between other elements
be received
to come or go into
come into fashion; become fashionable