prefixes - Prefix di- and bi-

I was wondering if there are differences between the cases of using di- and the cases of using bi-?

For example,

• why carbon dioxide instead of carbon bioxide?


• Why binoculars instead of dinoculars?


• Why bisexual instead of disexual?


• Why bilateral instead of dilateral?

Answer

Bi- comes from Latin, Di- from Greek. Which prefix is used would usually depend on the origin of the root of the word.