shackle vs handlock

shackle and handlock both are nouns.

Word	Noun	Adjective	Verb	Adverb
shackle	Yes	No	Yes	No
handlock	Yes	No	No	No

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

shackle: a restraint that confines or restricts freedom (especially something used to tie down or restrain a prisoner)
handlock: shackle that consists of a metal loop that can be locked around the wrist; usually used in pairs

Other hyponyms of shackle include ball and chain, fetter, hobble, cuff, handcuff, manacle, chains, irons.

shackle (noun)	handlock (noun)
a restraint that confines or restricts freedom (especially something used to tie down or restrain a prisoner)	shackle that consists of a metal loop that can be locked around the wrist; usually used in pairs
a U-shaped bar; the open end can be passed through chain links and closed with a bar

shackle (verb)	handlock (verb)
restrain with fetters
bind the arms of