umbral angolul

doorjamb [doorjambs]▼(upright post on either side of the door)
noun
[UK: dˈɔːdʒam] [US: dˈoːrdʒæm]

stile▼(vertical component of a panel or frame)
noun
[UK: staɪl] [US: ˈstaɪl]

threshold [thresholds]▼(bottom-most part of a doorway)
noun
[UK: ˈθreʃ.həʊld] [US: ˈθreʃhoʊld]