ligature vs tying

ligature and tying both are nouns.

Word	Noun	Adjective	Verb	Adverb
ligature	Yes	No	No	No
tying	Yes	No	No	No

As nouns, ligature and tying are synonyms defined as:

ligature (noun)	tying (noun)
the act of tying or binding things together	the act of tying or binding things together
something used to tie or bind
thread used by surgeons to bind a vessel (as to constrict the flow of blood)
a metal band used to attach a reed to the mouthpiece of a clarinet or saxophone
(music) a group of notes connected by a slur
character consisting of two or more letters combined into one