As verbs the difference between yawn and gapes
is that
yawn is to open the mouth widely and take a long, rather deep breath, often because one is tired and sometimes accompanied by pandiculation while
gapes is (
gape).
As nouns the difference between yawn and gapes
is that
yawn is the action of ; opening the mouth widely and taking a long, rather deep breath, often because one is tired while
gapes is .