Examples from the Web for subgroup
I think one of the main issues would be that there may be a subgroup of people who may run into problems with compulsive use.
It means treating women not as some alien species or subgroup.What the GOP Can Learn from the NFL’s Outreach to Women|Kristen Soltis Anderson|January 30, 2014|DAILY BEAST
There's a subgroup that both attends and mocks, but it's tiny.
An Islamist subgroup – the Brigade of Islam – also claimed responsibility, but the two stories are not incompatible.
If improvements were long confined to one subgroup, they might send labor into other subgroups and even into other general groups.Essentials of Economic Theory|John Bates Clark
It belongs to a subgroup and is a product of the mores of a subgroup.Folkways|William Graham Sumner
New Georgia Island, the main member of the subgroup, is 50 miles long (northwest to southeast) and from five to 30 miles wide.Systematics of Megachiropteran Bats in the Solomon Islands|Carleton J. Phillips
The totality of motions which leave a point A unchanged forms a subgroup.
On the other hand, a subgroup of the group of motions which leaves a line or a plane unaltered is a mixed group.