ammonoid vs ammonite

ammonoid and ammonite both are nouns.

Word	Noun	Adjective	Verb	Adverb
ammonoid	Yes	No	No	No
ammonite	Yes	No	No	No

As nouns, ammonoid and ammonite are synonyms defined as:

ammonoid and ammonite: one of the coiled chambered fossil shells of extinct mollusks

ammonoid (noun)	ammonite (noun)
one of the coiled chambered fossil shells of extinct mollusks	one of the coiled chambered fossil shells of extinct mollusks