homothety vs homothecy

homothety and homothecy both are nouns.

Word	Noun	Adjective	Verb	Adverb
homothety	Yes	No	No	No
homothecy	Yes	No	No	No

As nouns, homothety and homothecy are synonyms defined as:

homothety and homothecy: (mathematics) an isotropic scaling transformation of an affine space with a single fixed point.

homothety (noun)	homothecy (noun)
(mathematics) an isotropic scaling transformation of an affine space with a single fixed point.	(mathematics) an isotropic scaling transformation of an affine space with a single fixed point.