孔 /kǒng/ angolul

aperture [apertures]▼(opening, hole)
noun
[UK: ˈæ.pə.tʃə(r)] [US: ˈæ.pər.tʃər]

hole [holes]▼(hollow in some surface)
noun
[UK: həʊl] [US: hoʊl]

orifice [orifices]▼(mouth or aperture, as of a tube, pipe)
noun
[UK: ˈɒ.rɪ.fɪs] [US: ˈɔː.rə.fə.sə]