Keeping in mind that any and all concepts in this world can be explained and understood by anyone and everyone - and that when this is untrue, only a lack of language and experience are at work - these do not have straightforward counterparts in English with the exact same nuance, I think:

Japanese
潔い、木漏れ日、懐かしい、いただきます、ごちそうさま、よろしく、お疲れ様、儚い、ぼけ、つっこみ、花見、紅葉狩り

Swedish
Mångata, lagom, fika, smörgåsbord, ombudsman, klämdag, skadeglädje, orka (verb or exclamation)

Hungarian
Meglehetős(en), káröröm