The term "kyojo (admission letter)" means a letter of admission to attend the tea ceremony lessons, which is different in nature from menjo (diploma), menkyo (license), dan-i (qualification of rank) and others that imply accreditation or authorization of a member's capability.
「許状」は、稽古することを許可する趣旨の書面であり、実力認定の意味合いが強い「免状」「免許」「段位」などとは性格が異なる。