"Central factor"
"Characteristic subgroup of direct factor"
"Complemented central factor"
"Complemented normal subgroup"
"Complemented transitively normal subgroup"
"Conjugacy-closed normal subgroup"
"Direct factor over central subgroup"
"Endomorphism kernel"
"Intermediately endomorphism kernel"
"Join of finitely many direct factors"
"Join-transitively central factor"
"Locally inner automorphism-balanced subgroup"
"Normal AEP-subgroup"
"Normal subgroup having a 1-closed transversal"
"Normal subgroup in which every subgroup characteristic in the whole group is characteristic"
"Normal subgroup whose focal subgroup equals its derived subgroup"
"Powering-invariant normal subgroup"
"Quotient-powering-invariant subgroup"
"Right-quotient-transitively central factor"
SCAB-subgroup