Common words that cause topic overlap in gensim LDA
Select topic 2
Copy a list of words from the right (the ones with bars)
Select topic 5
Copy the list as in 2.
Compare the copied lists on your own.

I am not sure there is any better method there...
When we visualize the LDA using pyLDAvis, we can see topic overlap. I want know the word that is causing this topic overlap. Or I want to know the words that are at the intersection of the topic bubbles. Any guidance is appreciated.