observe vs catch out

observe and catch out both are verbs.

Word	Noun	Adjective	Verb	Adverb
observe	No	No	Yes	No
catch out	No	No	Yes	No

As verbs, catch out is a hyponym of observe; that is, catch out is a word with a more specific, narrower meaning than observe:

observe: discover or determine the existence, presence, or fact of by perception with the eyes
catch out: trap; especially in an error or in a reprehensible act

Other hyponyms of observe include find out, sense, instantiate, trace, see.

observe (verb)	catch out (verb)
stick to correctly or closely	trap; especially in an error or in a reprehensible act
make mention of
watch attentively
observe with care or pay close attention to
discover or determine the existence, presence, or fact of by perception with the eyes
follow with the eyes or the mind
show respect towards
behave as expected during of holidays or rites
conform one's action or practice to