What's the difference between a bassinet and a pack-and-play with bassinet attachment?

A dedicated bassinet is lighter, lower, and easier to position right against your bed; a pack-and-play with bassinet insert (like the BABY JOY 5-in-1) trades some of that bedside convenience for travel portability and longer usable life as a playard. Reddit users in r/Buyingforbaby and r/BabyBumps suggest the combo unit if you want one purchase to cover travel and daytime naps, but warn that some 5-in-1 units are 'heavy' and not as travel-friendly as marketed.