You're right. It's an unusual coincidence; and it happens more frequently each day here on A2K: look at how many times Raggedy and Bree think the same...
There are at least four words that can follow ARAGONITE.
There are at least three words that can follow PARAGONITE. (But not the plural...)
There are at least two (obscure) words that can follow HASHAB. (but again, not the plural...)