I’ve learned something from studying organically-related languages if they languages are organically related, then lower-level vocabulary should be more in common than highly specialized vocabulary.
I started studying Hebrew during the pandemic, and now I’m studying Arabic. I’ve noticed a lot of the most basic vocabulary are the same: I, you, he, she, and, in, to, from, house, people, heart, love, God.
Contrast this with Chinese and Japanese, two organically-unrelated languages. Chinese and Japanese share 60% of vocabulary, about the same percentage as Hebrew and Arabic. But the shared vocab consists mostly of technical and specialized vocabulary, similar to English’s relationship with French.