A bassinet is commonly only a temporary sleeping space, while a crib can last into early child years, technically.
In essence, a bassinet is a very shallow cradle or cot where a baby can sleep and be retrieved from this bassinet with ease.
A bassinet will commonly allow them to retrieve the baby with ease and allow the baby to sleep next to their bed, enabling them to keep an eye on them.
A bassinet is made for a newborn, whereas a crib is made for a toddler.