参照【さんしょう】
reference (e.g. to a dictionary, passage, footnotes), consultation, comparison, browsing (to a file or folder)
照明【しょうめい】
illumination, lighting
対照【たいしょう】
contrast, antithesis, comparison
照会【しょうかい】
inquiry, enquiry, query, reference
照合【しょうごう】
collation, comparison
照らす【てらす】
to shine on, to illuminate, to compare (with), to refer to
照る【てる】
to shine, to look slightly upward (of a noh mask; indicating joy, etc.)