tie vs strap

tie and strap both are nouns.

Word	Noun	Adjective	Verb	Adverb
tie	Yes	No	Yes	No
strap	Yes	No	Yes	No

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

Other hyponyms of tie include gag, muzzle, retie, bind off, tie up, loop, cord, lash together, truss, leash, rope, knot, lash, band, lace, lace up.

tie (noun)	strap (noun)
a cord (or string or ribbon or wire etc.) with which something is tied	whip consisting of a strip of leather used in flogging
neckwear consisting of a long narrow piece of material worn (mostly by men) under a collar and tied in knot at the front	an elongated leather strip (or a strip of similar material) for binding things together or holding something in position
a horizontal beam used to prevent two other structural members from spreading apart or separating	a band that goes over the shoulder and supports a garment or bag
one of the cross braces that support the rails on a railway track	hanger consisting of a loop of leather suspended from the ceiling of a bus or train; passengers hold onto it
a fastener that serves to join or connect
(music) a slur over two notes of the same pitch; indicates that the note is to be sustained for their combined time value
the finish of a contest in which the score is tied and the winner is undecided
equality of score in a contest
a social or business relationship

tie (verb)	strap (verb)
form a knot or bow in	secure (a sprained joint) with a strap
limit or restrict to	sharpen with a strap
finish a game with an equal number of points, goals, etc.	tie with a strap
fasten or secure with a rope, string, or cord	beat severely with a whip or rod
connect, fasten, or put together two or more pieces
unite musical notes by a tie
make by tying pieces together
perform a marriage ceremony
create social or emotional ties