One is ... and the other is is ...
tall and short
This person is always on time.
He is punctual.
He is ...
overweight
She is ...
patient or calm
He is never on time.
He is unpunctual.
He is ...
impatient
She has got .... hair.
curly
He is ...
nervous
She has got ... hair.
straight
He is ...
worried
He is ...
hard-working
She is ...
slim
This cat is ...
fat
He is ...
lazy