Kanji info: 確約 — 和英／英和辞典

確

assurance, firm, tight, hard, solid, confirm, clear, evident

On'yomi: カク (kaku)、コウ (kou)

Kun'yomi: たし.か (tashi.ka)、たし.かめる (tashi.kameru)

Radical components: 口宀石隹

Stroke order

約

promise, approximately, shrink

On'yomi: ヤク (yaku)

Kun'yomi: つづ.まる (tsuzu.maru)、つづ.める (tsuzu.meru)、つづま.やか (tsuzuma.yaka)

Radical components: 丶勹小幺糸

Stroke order