вдлъбвам angolul

concave▼(To render concave, or increase the degree of concavity.)
verb
[UK: ˈkɒŋk.eɪv] [US: kanˈkeɪv]

recess [recessed, recessing, recesses]▼(recede)
verb
[UK: rɪ.ˈses] [US: rə.ˈses]