Existential Elements: death, boredom, loneliness and fear as manifestations of meaning

finally putting aside these very sensitive topics out of the reach of superstitions and doctrines promoted by pseudo-sciences and religions, also not considering any experimental results and definitions from Biology, Physics, Chemistry and Psychology and all the contingencies of the scientific method, we will define the most prominent human existential elements in terms of metaphysical and linguistical notions, being death, the lack of meaning, boredom, the search for meaning, loneliness, the attempt of meaning and fear, the rejection of meaning.