curtain

nouns

hanging cloth used as a blind (especially for a window)
curtain, drape, drapery, mantle, pall
any barrier to communication or vision
"a curtain of secrecy"; "a curtain of trees"
curtain
is a type of (narrower)
anything serving to maintain separation by obstructing vision or access
barrier

verbs

provide with drapery
"curtain the bedrooms"
curtain
is a type of (narrower)
give something useful or necessary to
"We provided the room with an electrical heater"
furnish, provide, render, supply