sematic

As a noun taxonomy

is the science or the technique used to make a classification.

As an adjective sematic is

(biology|of the colouring of some insects etc) acting as a sign of danger.

Sematology is a related term of sematic.

As an adjective sematic

is acting as a sign of danger.

As a noun sematology is

the science of signs, particularly of verbal signs, in the operation of thinking and reasoning; the science of language as expressed by signs.

Sematic is a related term of semantron.

As an adjective sematic

is (biology|of the colouring of some insects etc) acting as a sign of danger.

As a noun semantron is

a percussion instrument used chiefly in eastern orthodox monasteries to summon the brethren to prayer or to lead processions.