And a search for the roots of said "shared" terms creates trees of relations which are crucial and incommensurately important to recognize clusters of meanings that link disparate "terminal" terms, and arrive to "patterns" in this compositional structure that are the "heart and soul" of those clusters.

(For example, I recently mentioned in these pages the terms for the "sky" as spawning from ideas of "covering", which also spawn terms for "colour" and "concealing".)

> The languages that turned out to be related this way included

...I see you have left out no less than Italian, the post-Latin at the epicenter!

OT: BTW, Seth, thank you for Let's Encrypt! (Maybe this is also something that OP did not know?)