💡 Detailed Explanation
The noun/verb 'あんしん' (peace of mind / relief) is written in kanji as '安心' (anshin). Sentence translation: 'I felt relieved after seeing my mother's healthy face.' '安' means cheap or peaceful/quiet, and '心' means heart/mind. '案' is used in '案内' (annai) but not in 'anshin'.