gripes vs intestinal colic

gripes and intestinal colic both are nouns.

Word	Noun	Adjective	Verb	Adverb
gripes	Yes	No	No	No
intestinal colic	Yes	No	No	No

As nouns, gripes and intestinal colic are synonyms defined as:

gripes and intestinal colic: acute abdominal pain (especially in infants)

Other synonyms of gripes include colic, griping.

gripes (noun)	intestinal colic (noun)
acute abdominal pain (especially in infants)	acute abdominal pain (especially in infants)