ridged vs keeled

ridged and keeled both are adjectives.

Word	Noun	Adjective	Verb	Adverb
ridged	No	Yes	No	No
keeled	No	Yes	No	No

As adjectives, ridged and keeled are synonyms defined as:

ridged and keeled: having a ridge or shaped like a ridge or suggesting the keel of a ship

Other synonyms of ridged include carinate, carinated.

ridged (adjective)	keeled (adjective)
having a ridge or shaped like a ridge or suggesting the keel of a ship	having a ridge or shaped like a ridge or suggesting the keel of a ship