These three letters start at dawn: boker, morning. Morning is when you can finally see clearly, and from that comes the family's hidden thread: looking closely. The one verb, levaker, splits in two from there: to visit (go and look in on someone) and to criticise (look hard and judge). Hence bikur a visit, bikoret criticism, bakara control, the bakar inspector. There is even bakar, cattle, the herd a herdsman watches over at dawn. Watch one sunrise open into visiting, controlling, and criticising. 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.
One pi'el verb carries two faces of "looking closely": levaker be- = to visit (look in on), levaker et = to criticise (look over and judge). The preposition tells you which sense is meant. The rest of the root is a rich set of nouns built off that single verb of scrutiny.
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.