Overgrown vs Teeming - What's the difference?

As verbs the difference between overgrown and teeming

is that overgrown is past participle of lang=en while teeming is present participle of lang=en.

is having large numbers of plants which have become too big, and are hence spoiling the picturesqueness of a garden.

(en adjective)

Having large numbers of plants which have become too big, and are hence spoiling the picturesqueness of a garden.

(In the form "An overgrown X") Something which has grown bigger but has not changed its character.

He spends so much money on new technology, he's like an overgrown schoolboy buying toys.