group (n.) Look up group at Dictionary.com
1690s, originally an art criticism term, "assemblage of figures or objects in a painting or design," from French groupe "cluster, group" (17c.), from Italian gruppo "group, knot," perhaps ultimately from Proto-Germanic *kruppaz "round mass, lump," and related to crop. Extended to "any assemblage" by 1736. Meaning "pop music combo" is from 1958.
group (v.) Look up group at Dictionary.com
1718 (transitive), 1801 (intransitive), from group (n.). Related: Grouped; grouping.