an impregnable fortress, an unassailable position

Great Britain

corticosterone

Synonym of 重水素 (jūsuiso, “heavy hydrogen”); deuterium

Hansel and Gretel

Rotterdam (a city in the Netherlands)

remaining, left behind, bequeathed, legacy, inherit

昌: a male given name / 亜季, 亜樹, 亜紀: a female given name / 阿騎, 安騎: Old name for the area around the Aki Shrine (See on Japanese Wikipedia) in the town of Ōuda, Nara prefecture.

bright / glittering / gleaming

lustrous