projection

In mathematics|lang=en terms the difference between projection and tracial

is that projection is (mathematics) a transformation which extracts a fragment of a mathematical object while tracial is (mathematics) of or pertaining to the trace of a projection.

As a noun projection

is something which projects, protrudes, juts out, sticks out, or stands out.

As an adjective tracial is

(mathematics) of or pertaining to the trace of a projection.

As nouns the difference between projection and cowfish

is that projection is something which projects, protrudes, juts out, sticks out, or stands out while cowfish is any of various types of boxfish, family ostraciidae.

As a noun projection

is something which projects, protrudes, juts out, sticks out, or stands out.

As a verb deproject is

(science) to reverse a projection.