Collocations for mum - noun

young
single, unmarried
lesbian
career, working
full-time, stay-at-home
welfare (AmE)
security, soccer (both AmE)
celebrity, TV
suburban
proud
busy
cool, good, great
expectant, pregnant (also mum-to-be in BrE)
new
The group is aimed at new mums with young babies.

surrogate
The cat acted as a surrogate mum to the chicks.

birth, real
Ellie had always been there for him even though she wasn't his real mum.

mum and dad