Let's look at their differences.
1 has different meanings.
"Stone" is usually used to refer to smaller, naturally occurring stones, with emphasis on materials, structures or specific uses. It can represent rocks, precious stones or building materials. And "rock" is usually used to refer to large and hard rocks, with emphasis on naturally occurring rocks or large rock structures.
Example:
She picked up a stone from the river. )
The hiker climbed the steep rock. )
2, the usage is different
? "Stone" can be used as a noun, verb or adjective, and can be collocated with various words to form phrases or verb phrases. Related to architecture, jewelry, stone, etc. And "rock" is usually used as a noun, which is related to geology, music, sports and so on, forming phrases or technical terms.
Example:
They built houses with local stones. They build houses with local stones. )
The band played rock music at the concert. )
3. The implied attributes are different.
"Stone" often implies the characteristics of hardness, impermeability and natural formation, which can be associated with coldness, indifference and indifference. And "rock" often implies firmness, hardness, reliability and stability, which can be linked with firmness, stability and stability.
Example:
His heart is as cold as a stone. )
She relies on the support of her friends, who are the rocks in her life. )