arrest vs logjam

arrest and logjam both are nouns.

Word	Noun	Adjective	Verb	Adverb
arrest	Yes	No	Yes	No
logjam	Yes	No	No	No

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

Other hyponyms of arrest include countercheck.

arrest (noun)	logjam (noun)
the act of apprehending (especially apprehending a criminal)	an immovable mass of logs blocking a river
the state of inactivity following an interruption	any stoppage attributable to unusual activity

arrest (verb)	logjam (verb)
hold back, as of a danger or an enemy; check the expansion or influence of
take into custody
attract and fix
cause to come to an abrupt stop