noun, noun, used as a suffix
group; cluster; crowd; swarm; herd or school
Usually used as a noun suffix or compound element for a collection of similar things, people, or animals; the English translation depends on the noun, such as cluster for buildings, crowd for people, or school for fish.
駅前に高層ビル群が並んでいる。
A cluster of high-rise buildings stands in front of the station.
船の下を大きな魚
A large school of fish passed under the boat.
noun, noun, used as a suffix
Mathematical term for a set with an operation satisfying the group axioms; also appears as a suffix in terms such as 対称群.
整数全体は加法について群をなす。
The set of all integers forms a group under addition.
授業で対称群の性質を調べた。
In class, we examined the properties of symmetric groups.