reach vs come through

reach is a noun but come through is not a noun.

Word	Noun	Adjective	Verb	Adverb
reach	Yes	No	Yes	No
come through	No	No	Yes	No

As verbs, come through is a hyponym of reach; that is, come through is a word with a more specific, narrower meaning than reach:

reach: reach a destination, either real or abstract
come through: succeed in reaching a real or abstract destination after overcoming problems

As verbs, come through is a hypernym of reach; that is, come through is a word with a broader meaning than reach:

Other hypernyms of reach include bring home the bacon, deliver the goods, succeed, win.

reach (noun)	come through (noun)
the act of physically reaching or thrusting out
an area in which something acts or operates or has power or control:
the limit of capability
the limits within which something can be effective

reach (verb)	come through (verb)
be in or establish communication with	penetrate
to exert much effort or energy	succeed in reaching a real or abstract destination after overcoming problems
move forward or upward in order to touch; also in a metaphorical sense	attain success or reach a desired goal
reach a point in time, or a certain state or level	continue in existence after (an adversity, etc.)
reach a destination, either real or abstract
reach a goal
place into the hands or custody of
to gain with effort
to extend as far as