detachment vs patrol

detachment and patrol both are nouns.

Word	Noun	Adjective	Verb	Adverb
detachment	Yes	No	No	No
patrol	Yes	No	Yes	No

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

Other hyponyms of detachment include bodyguard, picket, press gang, provost guard, rearguard.

detachment (noun)	patrol (noun)
the act of releasing from an attachment or connection	the activity of going around or through an area at regular intervals for security purposes
coming apart	a detachment used for security or reconnaissance
avoiding emotional involvement	a group that goes through a region at regular intervals for the purpose of security
a small unit of troops of special composition
the state of being isolated or detached

detachment (verb)	patrol (verb)
	maintain the security of by carrying out a patrol