meld
v.to blend or mix two or more things together to create one new thing. You use this when different ideas, styles, or objects combine smoothly.
v.to merge or blend distinct elements into a unified whole. Often describes the fusion of abstract concepts, artistic styles, or physical materials.
“The chef melds different spices to create a unique flavor.”
“The new building's design melds modern glass surfaces with traditional brickwork to match the historic neighborhood.”
“Successful leadership often requires the ability to meld disparate viewpoints into a single, coherent strategy that the entire organization can support.”
The verb is both transitive (takes an object) and intransitive (things meld together).
While 'merged into' is common, 'meld' is usually used without 'into each other' when the subjects are the things being combined.
“Randolph’s work inevitably represents the melding of traditions without which Southern cooking could not be what it is today.”