smiler vs physiognomy

smiler and physiognomy both are nouns.

Word	Noun	Adjective	Verb	Adverb
smiler	Yes	No	No	No
physiognomy	Yes	No	No	No

As nouns, smiler and physiognomy are synonyms defined as:

smiler and physiognomy: the human face (`kisser' and `smiler' and `mug' are informal terms for `face' and `phiz' is British)

Other synonyms of smiler include countenance, kisser, mug, phiz, visage.

smiler (noun)	physiognomy (noun)
the human face (`kisser' and `smiler' and `mug' are informal terms for `face' and `phiz' is British)	the human face (`kisser' and `smiler' and `mug' are informal terms for `face' and `phiz' is British)
a person who smiles