encumbrance vs concern

encumbrance and concern both are nouns.

Word	Noun	Adjective	Verb	Adverb
encumbrance	Yes	No	No	No
concern	Yes	No	Yes	No

As nouns, concern is a hypernym of encumbrance; that is, concern is a word with a broader meaning than encumbrance:

Other hypernyms of encumbrance include headache, vexation, worry.

encumbrance (noun)	concern (noun)
any obstruction that impedes or is burdensome	something that interests you because it is important or affects you
an onerous or difficult concern	something or someone that causes anxiety; a source of unhappiness
a charge against property (as a lien or mortgage)	a feeling of sympathy for someone or something
	an anxious feeling
	a commercial or industrial enterprise and the people who constitute it

encumbrance (verb)	concern (verb)
	be relevant to
	be on the mind of