sunbath

As a proper noun tan

is the eighth heavenly stem.

As a noun sunbath is

a period spent tanning in the sun.

As nouns the difference between sunbath and bronze

is that sunbath is a period spent tanning in the sun while bronze is bronze.

As nouns the difference between sunbath and square

is that sunbath is a period spent tanning in the sun while square is (geometry) a polygon with four sides of equal length and four angles of 90 degrees; a regular quadrilateral whose angles are all 90 degrees.

As an adjective square is

shaped like a (the polygon).

As a verb square is

to adjust so as to align with or place at a right angle to something else.

As a noun sunbath

is a period spent tanning in the sun.

As a verb sunbake is

to bake in the sun.

As nouns the difference between taxonomy and sunbath

is that taxonomy is the science or the technique used to make a classification while sunbath is a period spent tanning in the sun.

As a noun sunbath

is a period spent tanning in the sun.

As a verb sunbathe is

to expose one's body to the sun in order to relax or to obtain a tan.