puffy - meaning swollen for example: your eyes are puffy stop crying now swell up - becom larger in size due to pressure or infection this 2 words have different meaning. Have a nice day

puffy = adjective 形容詞 swell up = verb 動詞 That's the difference.

thanks jeff

same meaning, one is an adjective, the other a verbial phrase.

They have the same meaning, but different tone -- puffy is a more playful word, while swell up is a more official way of describing an abscess.