tieback vs holding device

tieback and holding device both are nouns.

Word	Noun	Adjective	Verb	Adverb
tieback	Yes	No	No	No
holding device	Yes	No	No	No

As nouns, holding device is a hypernym of tieback; that is, holding device is a word with a broader meaning than tieback:

tieback: a device (as a decorative loop of cord or fabric) for holding or drawing something back
holding device: a device for holding something

tieback (noun)	holding device (noun)
a device (as a decorative loop of cord or fabric) for holding or drawing something back	a device for holding something