worry vs bugaboo

worry and bugaboo both are nouns.

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

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

Other hyponyms of worry include burden, encumbrance, incumbrance, load, onus, business.

worry (noun)	bugaboo (noun)
something or someone that causes anxiety; a source of unhappiness	a source of concern
a strong feeling of anxiety	an imaginary monster used to frighten children

worry (verb)	bugaboo (verb)
lacerate by biting
touch or rub constantly
be worried, concerned, anxious, troubled, or uneasy
disturb the peace of mind of; afflict with mental agitation or distress
be concerned with
be on the mind of