indent vs blank space

indent and blank space both are nouns.

Word	Noun	Adjective	Verb	Adverb
indent	Yes	No	Yes	No
blank space	Yes	No	No	No

As nouns, blank space is a hypernym of indent; that is, blank space is a word with a broader meaning than indent:

Other hypernyms of indent include place, space.

indent (noun)	blank space (noun)
an order for goods to be exported or imported	a blank area
the space left between the margin and the start of an indented line

indent (verb)	blank space (verb)
bind by or as if by indentures, as of an apprentice or servant
make a depression into
cut or tear along an irregular line so that the parts can later be matched for authentication
notch the edge of or make jagged
set in from the margin