topic

nouns

the subject matter of a conversation or discussion
"he didn't want to discuss that subject"; "it was a very sensitive topic"; "his letters were always on the theme of love"
subject, theme, topic
is derived from
topical
some situation or event that is thought about
"he kept drifting off the topic"; "he had been thinking about the subject for several years"; "it is a matter for the police"
issue, matter, subject, topic
is derived from
topical