scaling ladder vs ladder

scaling ladder and ladder both are nouns.

Word	Noun	Adjective	Verb	Adverb
scaling ladder	Yes	No	No	No
ladder	Yes	No	Yes	No

As nouns, ladder is a hypernym of scaling ladder; that is, ladder is a word with a broader meaning than scaling ladder:

scaling ladder: a ladder used to scale walls (as in an attack)
ladder: steps consisting of two parallel members connected by rungs; for climbing up or down

scaling ladder (noun)	ladder (noun)
a ladder used to scale walls (as in an attack)	steps consisting of two parallel members connected by rungs; for climbing up or down
	a row of unravelled stitches
	ascending stages by which somebody or something can progress

scaling ladder (verb)	ladder (verb)
	come unraveled or undone as if by snagging