There were certain physical similarities but that was as far as it went.
There are certain similarities in the accounts of the embeds.
Harry had noticed a certain similarity, but he hadn't wanted to think about it.
All of the versions have certain similarities, such as the reel figure.
There was a certain similarity, of course, but the hunters fitted the description almost as well.
Of course, with the naked eye one might notice a certain similarity about the towns.
But of course, when he reached his destination, there would be a certain similarity to this place.
An observer would have been struck by a certain similarity between the two men.
The computer grouped the languages according to whether they shared certain similarities.
I was struggling to understand certain uncanny similarities between the present and the 70's.