come in vs inject

come in and inject both are verbs.

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

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

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

come in (verb)	inject (verb)
take a place in a competition; often followed by an ordinal	give an injection to
to insert between other elements	to introduce (a new aspect or element)
be received	to insert between other elements
to come or go into	feed intravenously
come into fashion; become fashionable	take by injection
	force or drive (a fluid or gas) into by piercing