合併【がっぺい】
merger (of companies, towns, etc.), combination, union, amalgamation, consolidation, coalition, fusion, annexation, affiliation, incorporation
併記【へいき】
writing side by side, writing (down) together, writing (down) both
併発【へいはつ】
concurrence, coincidence, complication (in illness)
併用【へいよう】
combined use, using together (with), using jointly, using at the same time
併殺【へいさつ】
double play
併合【へいごう】
merger, joining into one, amalgamation, melding, merging, annexation, absorption
合併症【がっぺいしょう】
complication
併設【へいせつ】
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
併せ持つ【あわせもつ】
to have two things (at the same time) (e.g. good and bad points), to also have something (in addition to something else)
併存【へいぞん】
coexistence