Syriac vs Arabic vs Hebrew

Submitted by Motke (Israel), Oct 22, 2018 at 19:47

Watching that youtube video I couldn't help noticing the ح/خ and ش/س switches when moving between Syriac and Arabic. E.g., Syriac's حمش is Arabic's خمس.

(In other words, Syriac uses the same consonants as in Hebrew (and there's also an 'e' vowel, in the same places).)

Do you happen to know the reason for these switches?

(I also know of the ع/غ switch, in Hebrew <-> Arabic (e.g., Arabic's مغارة is Hebrew's معرة), but I don't know if it exists in Syrian <-> Arabic as well.)

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