offing vs time to come

offing and time to come both are nouns.

Word	Noun	Adjective	Verb	Adverb
offing	Yes	No	No	No
time to come	Yes	No	No	No

As nouns, time to come is a hypernym of offing; that is, time to come is a word with a broader meaning than offing:

Other hypernyms of offing include future, futurity, hereafter.

offing (noun)	time to come (noun)
the part of the sea that can be seen from the shore and is beyond the anchoring area	the time yet to come
the near or foreseeable future