division vs concern

division and concern both are nouns.

Word	Noun	Adjective	Verb	Adverb
division	Yes	No	No	No
concern	Yes	No	Yes	No

division (noun)	concern (noun)
the act or process of dividing	something that interests you because it is important or affects you
an arithmetic operation that is the inverse of multiplication; the quotient of two numbers is computed	something or someone that causes anxiety; a source of unhappiness
the act of dividing or partitioning; separation by the creation of a boundary that divides or keeps apart	a feeling of sympathy for someone or something
one of the portions into which something is regarded as divided and which together constitute a whole	an anxious feeling
discord that splits a group	a commercial or industrial enterprise and the people who constitute it
an army unit large enough to sustain combat
a group of ships of similar type
a unit of the United States Air Force usually comprising two or more wings
an administrative unit in government or business
(botany) taxonomic unit of plants corresponding to a phylum
(biology) a group of organisms forming a subdivision of a larger category
a league ranked by quality

division (verb)	concern (verb)
	be relevant to
	be on the mind of