Lastex vs yarn

Lastex and yarn both are nouns.

Word	Noun	Adjective	Verb	Adverb
Lastex	Yes	No	No	No
yarn	Yes	No	Yes	No

As nouns, yarn is a hypernym of Lastex; that is, yarn is a word with a broader meaning than Lastex:

Lastex: yarn that has an elastic core wound around with cotton or silk or nylon or rayon threads
yarn: a fine cord of twisted fibers (of cotton or silk or wool or nylon etc.) used in sewing and weaving

Other hypernyms of Lastex include thread.

Lastex (noun)	yarn (noun)
yarn that has an elastic core wound around with cotton or silk or nylon or rayon threads	a fine cord of twisted fibers (of cotton or silk or wool or nylon etc.) used in sewing and weaving
	the act of giving an account describing incidents or a course of events

Lastex (verb)	yarn (verb)
	tell or spin a yarn