worry vs dwell

worry is a noun but dwell is not a noun.

Word	Noun	Adjective	Verb	Adverb
worry	Yes	No	Yes	No
dwell	No	No	Yes	No

As verbs, dwell is a hyponym of worry; that is, dwell is a word with a more specific, narrower meaning than worry:

Other hyponyms of worry include brood.

worry (noun)	dwell (noun)
something or someone that causes anxiety; a source of unhappiness
a strong feeling of anxiety

worry (verb)	dwell (verb)
lacerate by biting	think moodily or anxiously about something
touch or rub constantly	come back to
be worried, concerned, anxious, troubled, or uneasy	be an inhabitant of or reside in
disturb the peace of mind of; afflict with mental agitation or distress	originate (in)
be concerned with	exist or be situated within
be on the mind of