countermark

In lang=en terms the difference between watermark and countermark

is that watermark is to mark a datafile with a digital watermark while countermark is to apply a countermark to.

As nouns the difference between watermark and countermark

is that watermark is a translucent design impressed on the surface of paper and visible when the paper is held to the light while countermark is a mark or token added to those already existing, as a security or proof.

As verbs the difference between watermark and countermark

is that watermark is to mark paper with a watermark while countermark is to apply a countermark to.

As nouns the difference between terms and countermark

is that terms is while countermark is a mark or token added to those already existing, as a security or proof.

As a verb countermark is

to apply a countermark to.