treat
verb
°To negotiate, discuss terms, bargain (for or with).
°To discourse; to handle a subject in writing or speaking; to conduct a discussion.
"Cicero's writing treats mainly of old age and personal duty."
noun
°An entertainment, outing, or other indulgence provided by someone for the enjoyment of others.
"I took the kids to the zoo for a treat."
°An unexpected gift, event etc., which provides great pleasure.
"It was such a treat to see her back in action on the London stage."