• 慣行かんこう — customary practice
• 慣習かんしゅう — custom / tradition
• 習慣しゅうかん — habit
• 慣性かんせい — inertia
• 慣用かんよう — conventional / customary use
• 慣なれる — to get used to
• 慣ならす — to accustom / to tame

慣 is a phono-semantic compound. The 心 (heart/mind) radical reflects feelings and mental states, while the phonetic component 貫 (pass through) contributes both meaning and sound. Together, they represent becoming mentally familiar or emotionally adjusted to something.

新あたらしい 生活せいかつに 慣なれるまで時間じかんがかかる。
It takes time to get used to a new lifestyle.

犬いぬを 人ひとに 慣ならすのは 大事だいじです。
It’s important to get the dog used to people.

カン (kan) is the on-yomi, seen in compound words like 慣行 and 慣習. The kun-yomi なれる (to get used to) and ならす (to accustom) are used in daily language and are closely linked with experience and adaptation.