curtail vs immobilize

curtail and immobilize both are verbs.

Word	Noun	Adjective	Verb	Adverb
curtail	No	No	Yes	No
immobilize	No	No	Yes	No

As verbs, immobilize is a hyponym of curtail; that is, immobilize is a word with a more specific, narrower meaning than curtail:

Other hyponyms of curtail include abridge, immobilise, ration, control, restrict.

curtail (verb)	immobilize (verb)
place restrictions on	cause to be unable to move
terminate or abbreviate before its intended or proper end or its full extent	prohibit the conversion or use of (assets)
	convert (assets) into fixed capital
	make defenseless
	to hold fast or prevent from moving
	hold as reserve or withdraw from circulation; of capital