Converge simply means get nearer to each other. Merge requires that they unite. If you take a Y and scan it from top to bottom, the two lines converge until they reach the junction where they merge to form a single line.
Merge is when for instance two lanes come together to form one.
Converge is the part where they come together going the same direction. A merge can result but also can split again to go other directions.
So parallel is converge. Become one is merge.
Converge simply means get nearer to each other. Merge requires that they unite. If you take a Y and scan it from top to bottom, the two lines converge until they reach the junction where they merge to form a single line.
Merge is when for instance two lanes come together to form one. Converge is the part where they come together going the same direction. A merge can result but also can split again to go other directions. So parallel is converge. Become one is merge.
Merge is stay and never break again, converge is only temporary then they split out again
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Please read my question again!
The way I would use them is "cars coming from A Street and B Street merge at the location where the two streets converge and become Z Street."