A geminate root (the doubled נ) around one warm idea: grace, in both senses, charm that draws people, and a gift given for nothing. To grant a pardon is to give grace; to be gifted with a talent is to be graced from above. From the same source: charm itself, the merciful one, and the everyday word for "free of charge", what is given graciously. Every word here is 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.
The pa'al לָחֹן is geminate and contracts to one syllable, the verb a president uses to pardon someone. Its pu'al passive survives mainly as the participle מְחֻנָּן, "gifted": one who has been endowed with grace, i.e. talent. The other binyanim are not lexicalized here.
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.