concern

noun

1.
something that interests you because it is important or affects you
2.
an anxious feeling
concernment care fear
Derived from:
concern
3.
a feeling of sympathy for someone or something
Antonym:
unconcern
4.
something or someone that causes anxiety; a source of unhappiness
cark headache vexation worry
Derived from:
concern
5.
a commercial or industrial enterprise and the people who constitute it
business business concern business organisation business organization