agape vs gaping

agape is a noun but gaping is not a noun.

Word	Noun	Adjective	Verb	Adverb
agape	Yes	Yes	No	No
gaping	No	Yes	No	No

As adjectives, agape and gaping are synonyms defined as:

agape (noun)	gaping (noun)
a religious meal shared as a sign of love and fellowship
selfless love of one person for another without sexual implications (especially love that is spiritual in nature)
(Christian theology) the love of God or Christ for mankind

agape (adjective)	gaping (adjective)
with the mouth wide open as in wonder or awe	with the mouth wide open as in wonder or awe