• 老婆ろうば — an elderly woman; old lady
• 産婆さんば — midwife
• 老婆心ろうばしん — over-solicitous concern; “fussy” but caring worry
• お婆ばあさん — grandma; old lady (casual / colloquial)

With the woman radical 女, 婆 paints the image of an older woman — someone whose age, experience, and sometimes fussy care stand out. It often appears in words about grandmothers, elderly ladies, or the kind of concern that hovers warmly around others.