tessellation vs decoration

tessellation and decoration both are nouns.

Word	Noun	Adjective	Verb	Adverb
tessellation	Yes	No	No	No
decoration	Yes	No	No	No

As nouns, decoration is a hypernym of tessellation; that is, decoration is a word with a broader meaning than tessellation:

tessellation: the act of adorning with mosaic
decoration: the act of decorating something (in the hope of making it more attractive)

tessellation (noun)	decoration (noun)
the act of adorning with mosaic	the act of decorating something (in the hope of making it more attractive)
the careful juxtaposition of shapes in a pattern	something used to beautify
	an award for winning a championship or commemorating some other event