Collocations for son - noun

baby, newborn
infant, little, small, young
teenage
adult (esp. AmE), grown-up
only
eldest, first-born, middle, oldest, youngest
elder, younger
six-month-old, two-year-old, etc.
legitimate
bastard (old-fashioned), illegitimate
an illegitimate son of Louis XV

adopted
dutiful, good
beloved
fine, strong
The queen bore him four fine sons.

long-lost, prodigal
They welcomed me like a long-lost son.

dead
unborn
his wife and unborn son

surviving
native (esp. AmE)
a native son of Philadelphia

have
They have three young sons.

bear (formal), give birth to
His wife bore him three sons.

bring up, raise (esp. AmE)
Trying to bring up a young son is no easy task.
a single parent raising her son alone

grow up