堅

အွန်

ケン

ခွန်

かた(い)

堅実（けんじつ）、堅い（かたい）

steady/solid, hard/firm

On-reading (ケン) is used in compounds; kun-reading (かた(い)) is used standalone or with okurigana. Has multiple meanings (firm; hard; solid). Context determines which applies — pay attention in reading passages. This kanji forms verbs/adjectives with okurigana. Practice both the word form and compound forms.