• 厚生こうせい — public welfare
• 厚意こうい — courtesy / favor
• 厚紙あつがみ — thick paper
• 厚手あつで — thick fabric or material
• 厚情こうじょう — deep affection

厚 combines 厂 (cliff) with 日 and 子, conveying physical “thickness” and figurative warmth or generosity.

厚あつい本ほんを 読よみ終おえた。
I finished reading a thick book.

彼かれの 厚意こういに 感謝かんしゃします。
I appreciate his kindness.