Happen upon and Picked up

Happen upon verb - To come upon face-to-face or as if face-to-face.

Picked up and happen upon are semantically related In some cases you can replace phrase "Picked up" with "Happen upon", this terms are similar.

Picked up adjective - Being clean and in good order.

Happen upon and picked up are semantically related in obtain topic. Sometimes you can use "Happen upon" instead a verb phrase "Picked up".