pix chest vs pix

pix chest and pix both are nouns.

Word	Noun	Adjective	Verb	Adverb
pix chest	Yes	No	No	No
pix	Yes	No	No	No

As nouns, pix chest and pix are synonyms defined as:

pix chest and pix: a chest in which coins from the mint are held to await assay

Other synonyms of pix chest include pyx, pyx chest.

pix chest (noun)	pix (noun)
a chest in which coins from the mint are held to await assay	any receptacle in which wafers for the Eucharist are kept
	a chest in which coins from the mint are held to await assay