Here's an example I stole from the internet [1] "People in the remote mountain villages still cleave to their old traditions."
I'll leave other examples of cleavage meaning two things coming together to your imagination.
[1] https://dictionary.cambridge.org/dictionary/english/cleave-t...
With regards to "cleavage", I always thought that it was based on the other meaning of the word, the one about splitting things apart: https://www.merriam-webster.com/dictionary/cleavage
Here's an example I stole from the internet [1] "People in the remote mountain villages still cleave to their old traditions."
I'll leave other examples of cleavage meaning two things coming together to your imagination.
[1] https://dictionary.cambridge.org/dictionary/english/cleave-t...