Please pay attention to the Pinyin Final (韵母) - 'a' this Chinese character '巴' carries, which connects it with the other example symbols.
pinyin: bā. It is a character to form different phrase to give different meanings

Chinese phrase: 尾巴 wěi bā - tail

Examples:
爸 pinyin: bà; meaning: dad, father
Chinese phrase: 爸爸 bā ba - Dad


爬 pinyin: pá; meaning: to crawl, climb
Chinese phrase: 爬山 pá shān - to climb the mountain