sperm whale vs cachalot

sperm whale and cachalot both are nouns.

Word	Noun	Adjective	Verb	Adverb
sperm whale	Yes	No	No	No
cachalot	Yes	No	No	No

As nouns, sperm whale and cachalot are synonyms defined as:

sperm whale and cachalot: large whale with a large cavity in the head containing spermaceti and oil; also a source of ambergris

Other synonyms of sperm whale include black whale, Physeter catodon.

sperm whale (noun)	cachalot (noun)
large whale with a large cavity in the head containing spermaceti and oil; also a source of ambergris	large whale with a large cavity in the head containing spermaceti and oil; also a source of ambergris