How to combine bark, fibula, and chasm (if one speaks Proto-Turkic)?

Numerous Tukic words with only partially coinciding meanings (cf. the title and the first paragraph of the article) are traced back to very similar or even identical Proto-Turkic stems in ÈSTJa, and for most of the stems two or even three phonetic variants are suggested. In this article an attempt at finding possibly clear reconstructs is made.
 

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ÈSTJa VI = [Sevortjan È.V.], Blagova G.F., Levitskaja, L.S., Dybo A.V., Rassadin V.I. 2000. Ètimologičeskij slovaŕ tjurkskich jazykov. [vol. VI: к (misprinted for: қ)]. Moskva.

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