embroidery vs expansion

embroidery and expansion both are nouns.

Word	Noun	Adjective	Verb	Adverb
embroidery	Yes	No	No	No
expansion	Yes	No	No	No

As nouns, expansion is a hypernym of embroidery; that is, expansion is a word with a broader meaning than embroidery:

embroidery: elaboration of an interpretation by the use of decorative (sometimes fictitious) detail
expansion: a discussion that provides additional information

Other hypernyms of embroidery include elaboration, enlargement.

embroidery (noun)	expansion (noun)
decorative needlework	the act of increasing (something) in size or volume or quantity or scope
elaboration of an interpretation by the use of decorative (sometimes fictitious) detail	adding information or detail
	a discussion that provides additional information
	a function expressed as a sum or product of terms