As nouns the difference between rasper and grasper
is that rasper is a person who, or thing that rasps (scrapes) while grasper is a person who grasps.
rasper
English
Noun
(
en noun)
A person who, or thing that rasps (scrapes)
grasper
English
Noun
(
en noun)
A person who grasps
A tool used for grasping