Subcategories:
— [noun] (62)
— [adjective] (39)
— [adverb] (10)
— have faculty or power of sight [verb (intransitive)] (3)
— give sight to [verb (transitive)] (6)
— sight of something (44)
— a look or glance (160)
— seeing or looking (724)
— not seeing or preventing from seeing (75)
— one who sees (157)
— one skilled in optics (17)
— optical skills and techniques (59)
— optical instruments (743)
— types of vision (143)
— thing seen (683)
— visibility (381)
— invisibility (331)