日本語の質問
面と顔はどう違っていますか。Thank you for your help.

Question

Answer

顔 means just "Face" but 面 means like "Side"
for example 顔面(face side) 背面(back side) 
actually, 面 has mean "Face". but it's a little bit old and sometime offensive.

Answer

人間の顔面の形や表情を表す意味の場合、
面【つら】は顔【かお】よりぞんざいな言い方です。
In context of human face shape or expression, 'tsura' has impolite, rude or careless savor.

Answer

Hi,

They both can mean face, but 面 is pronounced as つら　(tsura).
And it is kind of a rough / dirty way to say face.