He accumulated his library.

Science, accumulated and reviewed over decades, tells us that our planet is changing in ways that will have profound impacts on all of humankind.

We studied the Concordance to Shakespeare to accumulate examples of alliteration.

He tried to accumulate wealth.

Tom accumulated a large fortune.

The cupboards were overflowing with the accumulated debris of several years.

Tom has accumulated a lot of junk since he's moved into this house.

One of the things we should learn from Americans is their ability to gather, accumulate, and impart knowledge.

Dust had accumulated on the desk.

Bird lime accumulates on the boughs, which also seep gum, resin, pitch etcetera.