Esthesic and poietic
（重定向自Esthesic）
Esthesic (UK aesthesic) and poietic are terms used in semiotics, the study of signs, to describe perceptive and productive levels, processes, and analyses of symbolic forms.
Like 'emic' and 'etic', both words appear to be derived from a suffix, -poietic (from Greek:ποιητικός "creative") meaning productive or formative and -esthesic (from αἴσθησις "sense") being receptive or perceptive, in relation to the neutral level. The neutral level is the "trace" left behind, the physical or material creation of esthesic and poietic processes.