molecule vs corpuscle

molecule and corpuscle both are nouns.

Word	Noun	Adjective	Verb	Adverb
molecule	Yes	No	No	No
corpuscle	Yes	No	No	No

As nouns, molecule and corpuscle are synonyms defined as:

Other synonyms of molecule include atom, mote, particle, speck.

molecule (noun)	corpuscle (noun)
(physics and chemistry) the simplest structural unit of an element or compound	either of two types of cells (erythrocytes and leukocytes) and sometimes including platelets
(nontechnical usage) a tiny piece of anything	(nontechnical usage) a tiny piece of anything