冴える[saeru] to be clear (of a sight, sound, colour, etc.)
冴え輝く[saekagayaku] to shine clearly
冴え行く[saeyuku] to clear gradually
冴え冴えした[saezaeshita] cheerful (look)
冴え冴えとした[saezaetoshita] cheerful (look)

冴え渡る[saewataru] to get cold
冴返る[saekaeru] to be very clear
頭の冴え[atamanosae] bright intelligence
腕の冴え[udenosae] dexterity

寒武利亜[kanburia] Cambria (old name for Wales)
亜寒帯[akantai] subarctic zone
悪寒[okan] chill
寒い[samui] cold (e.g. weather)
寒がり[samugari] sensitivity to cold

寒がる[samugaru] to be bothered by coldness
寒さ[samusa] coldness
寒害[kangai] damage from cold weather
寒気[samuke] chill
寒ぞら[samuzora] cold weather