introduce vs inject

introduce and inject both are verbs.

Word	Noun	Adjective	Verb	Adverb
introduce	No	No	Yes	No
inject	No	No	Yes	No

As verbs, inject is a hyponym of introduce; that is, inject is a word with a more specific, narrower meaning than introduce:

introduce (verb)	inject (verb)
be a precursor of	give an injection to
place, fit, or thrust (something) into another thing	to introduce (a new aspect or element)
put before (a body)	to insert between other elements
cause to come to know personally	feed intravenously
furnish with a preface or introduction	take by injection
bring before the public for the first time, as of an actor, song, etc.	force or drive (a fluid or gas) into by piercing
put or introduce into something
bring something new to an environment
bring in or establish in a new place or environment
bring in a new person or object into a familiar environment