併 - join, get together, unite

merger (of companies, towns, etc.); combination; union; amalgamation; consolidation; coalition; fusion; annexation; affiliation; incorporation

complication

writing side by side; writing (down) together; writing (down) both

double play

joint establishment (esp. schools of different levels or different courses of study); establishment as an annex (e.g. of a school); juxtaposition; placing side by side

concurrence; coincidence; complication (in illness)

combined use; using together (with); using jointly; using at the same time

merger; joining into one; amalgamation; melding; merging; annexation; absorption

combined treatment; combination therapy

Chalcolithic; Copper Age

classifying together

occurring simultaneously