subject

TOPIC
WordClue
ACREday's math
NAMEnoun
WORDverb or noun
ISSUEquestion, topic
THREADtopic
PROBLEMquestion, subject
SUBJECTmatter, topic
QUESTIONsubject, motion
CONNOISSEURsubject-matter expert
NIGHTHAWKsubfamily of birds
CONNOISSEURsubject-matter expert