Topic vs. Purpose

Difference Between Topic and Purpose
Topicadjective
Topical.
Purposenoun
An object to be reached; a target; an aim; a goal. "purpose".
Topicnoun
Subject; theme; a category or general area of interest.
A society where a topic cannot be discussed, does not have free speech.Purposenoun
A result that is desired; an intention.
Topicnoun
(Internet) Discussion thread.
Purposenoun
The act of intending to do something; resolution; determination.
Topicnoun
(obsolete) An argument or reason.
Purposenoun
The subject of discourse; the point at issue.
Topicnoun
An external local application or remedy, such as a plaster, a blister, etc.
Purposenoun
The reason for which something is done, or the reason it is done in a particular way.
The purpose of turning off the lights overnight is to save energy.Topicnoun
the subject matter of a conversation or discussion;
he didn't want to discuss that subjectit was a very sensitive topichis letters were always on the theme of lovePurposenoun
(obsolete) Instance; example.
Topicnoun
some situation or event that is thought about;
he kept drifting off the topiche had been thinking about the subject for several yearsit is a matter for the policePurposeverb
(intransitive) To have set as one's purpose; resolve to accomplish; intend; plan.
Purposeverb
To design for some purpose.
Purposeverb
To discourse.
Purposenoun
an anticipated outcome that is intended or that guides your planned actions;
his intent was to provide a new translationgood intentions are not enoughit was created with the conscious aim of answering immediate needshe made no secret of his designsPurposenoun
what something is used for;
the function of an auger is to bore holesballet is beautiful but what use is it?Purposenoun
the quality of being determined to do or achieve something;
his determination showed in his every movementhe is a man of purposePurposeverb
propose or intend;
I aim to arrive at noonPurposeverb
reach a decision;
he resolved never to drink again