application program vs applications programme

application program and applications programme both are nouns.

Word	Noun	Adjective	Verb	Adverb
application program	Yes	No	No	No
applications programme	Yes	No	No	No

As nouns, application program and applications programme are synonyms defined as:

application program and applications programme: a program that gives a computer instructions that provide the user with tools to accomplish a task

Other synonyms of application program include application.

application program (noun)	applications programme (noun)
a program that gives a computer instructions that provide the user with tools to accomplish a task	a program that gives a computer instructions that provide the user with tools to accomplish a task