Yes, 废话 is a different word than than 大话, and sounds different. I've heard 大话 also means bullshit, though. E.g., "大话王 King Of Bullshit": https://www.le.com/ptv/

Yes, 废话 is a different word than than 大话, and sounds different. I've heard 大话 also means bullshit, though. E.g., "大话王 King Of Bullshit": https://www.le.com/ptv/vplay/26199923.html https://www.le.com/ptv/vplay/26199923.html