י־ר־ש means to take possession, to inherit, with an old harder edge: to dispossess, to take over land from those who held it. The same root therefore looks both ways: the heir who receives, and the one who bequeaths down the line. The first letter is a weak yod, so the pa'al infinitive contracts to לָרֶשֶׁת, and the causative hif'il turns the yod into a long o: לְהוֹרִישׁ. One root holds the whole chain: receiving, passing on, and what gets passed. 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 two active voices are mirror images: the pa'al לָרֶשֶׁת is to receive an inheritance, while its causative hif'il לְהוֹרִישׁ is to make someone inherit, i.e. to bequeath. The nif'al לְהִוָּרֵשׁ drifted to a separate literary sense (to be left destitute). Note the פ"י behaviour: the yod vanishes (לָרֶשֶׁת) or becomes a long o (הוֹ-). No pi'el, pu'al, huf'al or hitpa'el are lexicalized for this root.
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.