"(2,3,7)-triangle group"
"(2,3,7)-von Dyck group"
"1-automorphism-invariant subgroup"
"1-completed subgroup"
"1-endomorphism-invariant subgroup"
"1-isomorphic groups"
"2-Engel group"
"2-divisible group"
"2-generated group"
"2-hypernormalized subgroup"
"2-locally finite group"
"2-powered group"
"2-sub-ideal of a Lie ring"
"2-subnormal subgroup"
"2-torsion-free group"
"3-Engel group"
"3-abelian group"
"3-locally nilpotent group"
"3-step group for a prime"
"3-transposition group"
"4-subnormal subgroup"
A-group
"ACU-closed group property"
"ACU-closed subgroup property"
AEP-subgroup
"APS homomorphism"
"APS of groups"
"Abelian direct factor"
"Abelian group"
"Abelian hereditarily normal subgroup"
"Abelian normal subgroup"
"Abelian normal subgroup of maximum order"
"Abelian subgroup"
"Abelian subgroup of maximum order"
"Abelian subgroup of maximum order which is normal"
"Abelian subgroup of maximum rank"
"Abelian-completed subgroup"
"Abelian-extensible automorphism"
"Abelian-extensible automorphism-invariant subgroup"
"Abelian-extensible endomorphism"
"Abelian-extensible endomorphism-invariant subgroup"
"Abelian-potentially characteristic subgroup"
"Abelian-potentially verbal subgroup"
"Abelian-quotient subgroup"
"Abelian-quotient-pullbackable automorphism-invariant subgroup"
"Abnormal subgroup"
"Absolutely normal subgroup"
"Absolutely regular p-group"
"Absolutely simple group"
"Action-isomorph-free subgroup"