What do the two types of ribosomes do?

Essentially, they do the same thing: protein synthesis. The free one are, as their name implies, free in the cytoplasm, while the bound ones are attached to the endoplasmic reticulum; when looked at with an electron microscope, the reticulum looks sprayed with tiny dots- the ribosomes and is therefore called rough endoplasmic; as for the difference:

1. Free ones usually synthesize proteins meant for intracellular use.

2. Bound ones usually synthesize proteins for extracellular use. Process of exporting proteins out of the cell is lengthy and implies changes to the proteins, in the endoplasmic reticulum and further in the Golgi apparatus; changes may occur to the structure of the protein, but what always happenns is that is is inserted into a vesicle; bound ribosomes synthesize their proteins directly into the reticulum, which helps speed up the process; insulin for example is synthesized by bound proteins;

Types Of Ribosomes

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What do the two types of ribosomes do?

I can't find a straight answer anywhere, what do "free" ribosomes do, and what do "bound" ribosomes do? What is their function?