intestinal colic vs gripes

intestinal colic and gripes both are nouns.

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

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

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

Other synonyms of intestinal colic include colic, griping.

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