This is a small, tight family with a surprise inside it. The core idea is blessing: to bless, a blessing, blessed. But the very same three letters also spell בֶּרֶךְ, the knee, and that is no accident. The old gesture of blessing was to bend the knee, to kneel; the word for the act and the word for the joint grew from one root. So when you say בָּרוּךְ (blessed), a bent knee is hiding in the consonants. 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 active verb is pi'el, לְבָרֵךְ. Its passive pu'al (to be blessed) and the reflexive hitpa'el לְהִתְבָּרֵךְ (to be blessed with, to receive a blessing) round out the system, but only the active verb is part of this verified family.
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.