reach vs come to

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

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

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

Other hyponyms of reach include score, get to, make, progress to, reach, begin, strike, culminate, compass, average, finagle, manage, wangle.

reach (noun)	come to (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 to (verb)
be in or establish communication with	return to consciousness
to exert much effort or energy	cause to experience suddenly
move forward or upward in order to touch; also in a metaphorical sense	attain
reach a point in time, or a certain state or level	be relevant to
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