*meh₁- [moon]

moon
←ME Mone, mone
←OE mōna,
←PWG *mānō,
←PG *mēnô
←IE *mḗh₁n̥s (“moon, month”)
←IE *meh₁- (“to measure”)

lunar
←ME lunar
←L lūnāris
←OL losna
←PI *louksnā
←IE *lówksneh₂,
←IE *lewk- (“bright; to shine”)

चंद्रमा
←S चन्द्रमाः (candramāḥ)
←S चन्द्रमस् (candramas)
←S चन्द्र (candra) +‎ मस् (mas)

चन्द्र (candrá)
←PIA *(s)ćandrás
←PII *(s)čandrás
←IE *(s)kand-. Doublet of श्चन्द्र (ścandrá, “shining, radiant”)

मस् (mas)
←S मास् (mās)
←PII *māHas (“moon, month”),
←IE *mḗh₁n̥s (“moon, month”)
←IE *meh₁- (“to measure”)

सूर्य
←A -य (-ya) extension of the base सूर् (sūr)
←PII *súHar (“sun”)
←IE *sóh₂wl̥ (“sun”)
Cognate with
Ancient Greek ἥλιος (hḗlios)
Latin sōl
Persianخور (xur)
English sun

Sur [Spanish]
←F sud
←OE suþ
←PG *sunþrą
←PG *sunþraz ("south")
←IE *sh₂ún-teros
←IE *sóh₂w-l̥ ~ *sh₂w-én-s (“the sun”) +‎ *-teros (directional suffix)