sluji -slu- gismu

x₁ is a/the muscle [body-part] controlling x₂, of body x₃; [metaphor: tools of physical power].

(adjective:) x₁/x₂/x₃ is muscular (different senses). See also rectu, xadni, zajba.

jbovlaste

In notes:

juxre: x₁ (action) is clumsy/awkward by standard x₂.
rectu: x₁ is a quantity of/contains meat/flesh from source/animal x₂.
xadni: x₁ is a/the body/corpus/corpse of x₂; (adjective:) x₁ is corporal/corporeal.
zajba: x₁ is a gymnast at/performs gymnastics feat x₂.