lanthanide vs lanthanoid

lanthanide and lanthanoid both are nouns.

Word	Noun	Adjective	Verb	Adverb
lanthanide	Yes	No	No	No
lanthanoid	Yes	No	No	No

As nouns, lanthanide and lanthanoid are synonyms defined as:

lanthanide and lanthanoid: any element of the lanthanide series (atomic numbers 57 through 71)

Other synonyms of lanthanide include lanthanon, rare-earth element, rare earth.

lanthanide (noun)	lanthanoid (noun)
any element of the lanthanide series (atomic numbers 57 through 71)	any element of the lanthanide series (atomic numbers 57 through 71)