logjam vs arrest

logjam and arrest both are nouns.

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

As nouns, arrest is a hypernym of logjam; that is, arrest is a word with a broader meaning than logjam:

Other hypernyms of logjam include check, halt, hitch, stay, stop, stoppage.

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

logjam (verb)	arrest (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