As nouns the difference between climber and boulderer
is that climber is one who climbs while boulderer is (climbing) a climber who takes part in bouldering.
As a verb climber
is (obsolete) to climb; to mount with effort; to clamber.
climber
English
Etymology 1
(climb)
Noun
(
en noun)
One who climbs.
A plant that climbs, such as a vine.
A bird that climbs, such as a woodpecker or a parrot.
Derived terms
* social climber
Etymology 2
From climb; compare clamber.
boulderer
English
Noun
(
en noun)
(climbing) a climber who takes part in bouldering