miserable, unhappy dear, darling 2 realizations
ACCEPTED Realization 1
type Polysemy
language Breton
lexeme kaez
meaning 1 unfortunate, miserable
direction
meaning 2 dear (= beloved)
reference
comment Mid.-Breton. quaez 'captive, unfortunate' related to the Wel. caeth, cacht 'slave' < Lat. captus 'captive' Buck 1113
ACCEPTED Realization 2
type Semantic evolution
language 1 Old Japanese
language 2 Japanese
lexeme 1 kawayushi
lexeme 2 kawaii
meaning 1 pitiful

箭(さ)ヲ立テヽ[鬼ヲ]殺サムハナホカハユシ
sa o tatete [oni o] korosamu wa nao kawayushi


readies an arrow, yet feels sorry to kill [the demon] ("Konjaku-monogatari" 26-5)

direction
meaning 2 loveable, cute かわいい赤ちゃんですね。

Kawaii akachan desu ne.


What an adorable baby!

reference Shin waei daijiten
comment

reference for Old Japanese:
Nihon Kokugo Daijiten https://kotobank.jp/word/可愛い-468533#w-1923827