Topic: On Edge
 -Part I: Japanese Knives
Word definitions
on edge (idiom): very nervous, excited, or in suspense
concerted effort (n.): serious, organised/planned effort
(is) a thing (n.): something many people do; something ‘normal’ or popular (casual)
a breakdown of (idiom): a more detailed explanation or analysis
all-rounder (n.): having wide range of skills, abilities, or balanced features 
scales (n.): small, hard plates covering the body of fish or reptiles
unsuitable (adj.): not fitting for the purpose
concave (adj.): curved inwards
even (adj.): flat and smooth; equal in value
affordable (adj.): inexpensive, reasonably priced 
prone to (adj.): more sensitive to; more likely to be affected by (something negative)
rust (n.): reddish-brown coating forming on metals because of moisture
won’t cut it (idiom): will not be (good) enough