Postscript vs Pdf - What's the difference?

In countable terms the difference between postscript and pdf

is that postscript is an addition to a story, play, etc while pdf is a document in this format.

* post script * postscriptum (post scriptum) * PS (, etc.)

(en noun)

(countable) An addendum to a letter, added after the author’s signature.

(countable) An addition to a story, play, etc.

To indicate the beginning of a postscript to a letter, one often uses the abbreviation PS'' (or '' , etc) followed by a colon or comma.

(en verb)

To extend (a letter or another document) with additional remarks.

(wikipedia PDF)

(en noun)

Portable]] Document [[format, Format

# (uncountable) A standard for representing electronic documents, allowing them to be transmitted and reproduced accurately.

# (countable) A document in this format.

probability density function or probability distribution function

(en verb)

to convert to PDF format

(en proper noun)