A different word for "One Thing In Common"?

Question

if there is, a single word, that is more professional and used on academic work or everywhere else where good English is written with proper grammar. > E.g. They got one thing in common. E.g. They have one common shared foundation. > I am not sure I am conveying my message in a way that matters. Thanks. > They have one thing in common—*the user experience*. **Edit:** There's absolutely nothing wrong with the last example I added, grammatically speaking.

Answer 1

"They have one thing in common" can be made more formal by...

Replacing the pronoun "they" with what you're actually talking about and/or...

Replacing "one thing" with what they actually have in common. For example.

A and B have one thing in common.

A and B have in common the fact that they each bear little on the velocity of an unladen swallow.

Never ever say "They got one thing in common. "Got" should almost never appear in formal writing.