concern

nouns

something that interests you because it is important or affects you
"the safety of the ship is the captain's concern"
concern
is a type of (narrower)
a sense of concern with and curiosity about someone or something
"an interest in music"
interest, involvement
an anxious feeling
"care had aged him"; "they hushed it up out of fear of public reaction"
care, concern, fear
a feeling of sympathy for someone or something
"She felt strong concern for those less fortunate"
concern
antonym
unconcern
is a type of (narrower)
sharing the feelings of others (especially feelings of sorrow or anguish)
fellow feeling, sympathy
something or someone that causes anxiety; a source of unhappiness
"New York traffic is a constant concern"; "it's a major worry"
concern, headache, vexation, worry
a commercial or industrial enterprise and the people who constitute it
"he bought his brother's business"; "a small mom-and-pop business"; "a racially integrated business concern"
business, business concern, business organisation, business organization, concern

verbs

be relevant to
"There were lots of questions referring to her talk"; "My remark pertained to your earlier comments"
bear on, come to, concern, have-to doe with, pertain, refer, relate, touch, touch on
be on the mind of
"I worry about the second Germanic consonant shift"
concern, interest, occupy, worry