roundhead

As nouns the difference between soundhead and roundhead

is that soundhead is an alternative form of sound head while Roundhead is a nickname given to the supporters of parliament during the English Civil War.

As an adjective roundhead is

{{cx|of a screw|lang=en}} Having a dome-shaped head.

As nouns the difference between taxonomy and roundhead

is that taxonomy is the science or the technique used to make a classification while roundhead is a roundhead screw, one with a domed head.

As an adjective roundhead is

having a dome-shaped head.

Roundhead is a synonym of longfin.

As nouns the difference between roundhead and longfin

is that roundhead is a roundhead screw, one with a domed head while longfin is any member of the family plesiopidae of elongated perciform fish.

As an adjective roundhead

is having a dome-shaped head.