And she conceived
harah (haw-raw')
to be (or become) pregnant, conceive -- been, be with child, conceive, progenitor.
and bare
yalad (yaw-lad')
to bear young; causatively, to beget; medically, to act as midwife; specifically, to show lineage
a son
ben (bane)
a son (as a builder of the family name), in the widest sense (of literal and figurative relationship, including grandson, subject, nation, quality or condition, etc.
and he called
qara' (kaw-raw')
to call out to (i.e. properly, address by name, but used in a wide variety of applications)
his name
shem (shame)
an appellation, as a mark or memorial of individuality; by implication honor, authority, character -- + base, (in-)fame(-ous), named(-d), renown, report.
Er
`Er (ayr)
watchful; Er, the name of two Israelites -- Er.