window oyster vs Placuna placenta

window oyster and Placuna placenta both are nouns.

Word	Noun	Adjective	Verb	Adverb
window oyster	Yes	No	No	No
Placuna placenta	Yes	No	No	No

As nouns, window oyster and Placuna placenta are synonyms defined as:

window oyster and Placuna placenta: marine bivalve common in Philippine coastal waters characterized by a large thin flat translucent shell

Other synonyms of window oyster include capiz, windowpane oyster.

window oyster (noun)	Placuna placenta (noun)
marine bivalve common in Philippine coastal waters characterized by a large thin flat translucent shell	marine bivalve common in Philippine coastal waters characterized by a large thin flat translucent shell