A small family, but a vivid one. The root means to take, and the taking radiates two ways: outward to the customer (the one who takes the goods) and inward to the lesson (what you take away from an experience). Hebrew quietly turns "taking" into both commerce and wisdom. Note that the pa'al infinitive לָקַחַת is irregular, one of the verbs every beginner meets early. 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.
This root barely leaves the simple stems: pa'al "to take" and its passive nif'al "to be taken". The pa'al infinitive לָקַחַת is irregular, ending in ־ַחַת rather than the usual לִ_ְ_ֹ_ pattern. The pi'el, hif'il and hitpa'el are not lexicalized for everyday use.
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.