corpuscle vs atom

corpuscle and atom both are nouns.

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

As nouns, corpuscle and atom are synonyms defined as:

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

corpuscle (noun)	atom (noun)
either of two types of cells (erythrocytes and leukocytes) and sometimes including platelets	(physics and chemistry) the smallest component of an element having the chemical properties of the element
(nontechnical usage) a tiny piece of anything	(nontechnical usage) a tiny piece of anything