In Aristotelian philosophy intention indicates "the orientation of the mind to its object; the object exists in the mind in an intentional way" (p28). Phenomenologist Moustakas references J.J. Kockelman's summary of Aristotle, and in doing so sets the ground from which he can explain E. Husserl's concept of noema and noesis to describe the "interpretive form" within perception.
Noema = is the phenomena and not the 'real' object (textual)
Noesis = the initial underlying meaning (structural)
The noema-noesis relationship is a working out of the function of intentionality within an experience. The textual and structural dimensions of the phenomenon experienced is to uncover its meaning, moving from initial anonymity of its intentionality towards a conscious understanding.
The noema is what Husserl describes as "perceived as thus", and
the noesis is the "perfect self-evidence".
For every noema there is a noesis and vice versa.
Noematic meanings continually perceptively change depending upon point of view and situation, its meaning a synthesis from continual many-angled perception of "objects (real or imaginery) that are before us in consciousness" (p31).
The noesis comes from "explicating how beliefs about such objects may be acquired". The structural noesis leads us to understand how we experience the phenomena. Once understood this leads to a correlation of "intentionality into meanings and essences of experience" (p32)
MOUSTAKAS, C. (1994) Phenomenological Research Methods. Sage Publications.