This manuscript is a part of a series of manuscripts named 'The New and Axiom-Less Foundation of All Human Knowledge'. This manuscript is a part of the sub-series of this series, called as 'Knowledge sub-series'. We had started with the exploration of various phenomenon which are critical as an aid for knowledge process, from previous manuscript 'The New Foundation of Knowledge Exploration: Part 4'. In this manuscript, we will continue the same exploration. In this manuscript we will explore the phenomenon related to phenomenon of perception. In this manuscript, we explore the phenomenon of identification, phenomenon of domains of knowledge, phenomenon of 'philosophy, science & computation', phenomenon of language, phenomenon of meaning, phenomenon of 'data & information', and the phenomenon of idea.