How to say "Strict" in Japanese

When translating "strict" into Japanese, you must choose carefully between 厳重な and 峻別. In Japanese, 厳重な (げんじゅうな (genjūna)) is typically associated with "strict, rigorous, severe, tight (security)" (Syllabus Level: N3) and represents Describes something that is very strict, severe, or tightly controlled, often related to security, rules, or warnings. It's a な-adjective. 「厳重に警戒する. On the other hand, 峻別 (しゅんべつ (shunbetsu)) maps to "strict distinction, clear differentiation, sharp demarcation" (Syllabus Level: N1) and represents Emphasizes making a very clear and unambiguous distinction between two or more things, often to avoid confusion or maintain standards. 厳しく区別すること、明確に分類することを指す。. A literal translation of "strict" can often sound unnatural to native Japanese speakers if mixed up!