人気 /nin ki/ means 'popular' in Japanese. If to be used as a modifier it would be 人気な /nin ka na/.
I would compare Russian popular morale in WWI to say- Japanese popular morale in 1944 in WWII.
how to say "editor" in japanese
To say old Japanese illustrations in Japanese, you say "Mukashi no Nihon no irasuto".
we say Nakagawa if we want to say inside in Japanese.
フライドポテト is how you say it in japanese'
メロン is how you say melon in Japanese.
To say tennis in Japanese.........テニス
Terekineshisu is the word for telekinesis in the Japanese language.
To say blue fish in Japanese you say ブルーフィッシュ.
This is no word for a or the in Japanese.
Not that popular but it is eaten here.
VERY common and popular.