Combine joins Latin com- (together) with bini (two by two), originally meaning to pair things up, before broadening to any act of merging.
To join or merge two or more things together to form a single unit or produce something new.
From late Middle English, borrowed from Late Latin combinare meaning 'to unite, couple together,' formed from Latin com- ('together') and bini ('two by two, in pairs'). The element bini derives from bis ('twice'), which traces to an ancient Proto-Indo-European root *dwis- or *dwo- meaning 'two.' The word thus literally means 'to put together in pairs,' though it quickly generalised to mean any joining. The noun