Now you're asking some very difficult questions
There may be others here who do know the origins of the names of knots, and many new knots have been documented so that we can know why they have the names they do, but the names of older knots may forever be a mystery. Who was Matthew Walker? Why is a Thranny called a Thranny? Why do the names Cow hitch, Lark's head, Lark's foot, Girth hitch, Ring hitch, Lanyard hitch, Bale Sling hitch, Baggage Tag Loop, Tag Knot, Deadeye hitch, and Running Eye all describe the same knot (according to Wikipedia)?
And although I have not heard of Wall or Crown having other names, some knots have so many names or ancient origins it is highly confusing. A Reef Knot was called that because it was used on the reef points of a sail to perform the act of reefing, I do know that.
But I don't know the origin of Wall or Crown. Looking at your list of definitions, I might guess that the "plant part" is descriptive of a Crown. But did it originate as a sailor's knot, and therefore the "top or highest part" might be the reason? Does the rhyme help? "In a Wall the strands stand tall, in a Crown the strands hang down". Some other knots are combinations of a layer of Wall and a layer of Crown, and choosing names with an easy rhyme would help you keep track of how to make them.
How do their names translate in/from Russian?
Sweeney: I haven't read the IGKT booklets about knotting by Geoffrey Budworth: "Knotlore" and "Knot Rhymes and Reasons" - would they have an answer to Vladimir's question?

Glenys