Three consonants carry one idea: taste. On the tongue it is flavor; in the mind it stretches to the reason or sense of a thing (a ta'am for doing something), and in liturgy the same letters name the cantillation marks that give a verse its melodic accent. Pour the root into a verb mould and you taste; pour it into the causative and you make something stand out, you stress it. Every word here is the same three letters seen from a different angle, verified against pealim, niqqud included.
The same root runs through the verb system. Each binyan is a voice: it bends the one idea into active, passive, causative or reciprocal. Tap to hear.
Only two binyanim are lexicalized here: the plain pa'al "to taste" and the causative hif'il, which moves the meaning from the tongue to attention, "to make a thing stand out", hence "to stress, to emphasize". The passives (nif'al, pu'al, huf'al) and the pi'el / hitpa'el are not in everyday use for this root. That is normal: not every root fills all seven moulds.
Same root letters, different noun moulds (mishkalim). The mould tells you the function: who does it, the act of doing it, or the thing produced.
Strip the prefixes, suffixes and vowels. Three consonants remain, and the meaning lives there.