Example : She pieced a quilt.
He tacked together some verses.
They set up a committee.

Synonyms : piece, put together, set up, tack, tack together

Example : We assembled in the church basement.
Let's gather in the dining room.

Synonyms : foregather, forgather, gather, meet

Example : Assemble your colleagues.
Get together all those who are interested in the project.
Gather the close family members.

Synonyms : gather, get together