bastnasite vs bastnaesite

bastnasite and bastnaesite both are nouns.

Word	Noun	Adjective	Verb	Adverb
bastnasite	Yes	No	No	No
bastnaesite	Yes	No	No	No

As nouns, bastnasite and bastnaesite are synonyms defined as:

bastnasite and bastnaesite: a yellow-to-brown mineral that is a source of rare earth elements

bastnasite (noun)	bastnaesite (noun)
a yellow-to-brown mineral that is a source of rare earth elements	a yellow-to-brown mineral that is a source of rare earth elements