All 6 Uses

however
in
The Other Wes Moore
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My grandmother, however, was even more struck by the pastor's son.
p. 40.9

however = a word used to connect contrasting ideas as when using though, in spite of that, in contrast, nevertheless, etc.
The deeper bruise, however, Mary could do nothing about.
p. 72.4 *
My mother had written to family and friends, asking them to help her however they could.
p. 95.5

however = in whatever way
For all of us, however, it was, at this moment, terrifying.
p. 134.1

however = a word used to connect contrasting ideas as when using though, in spite of that, in contrast, nevertheless, etc.
If I find anything out, I will tell you, and I will cooperate however I can, but right now I don't need to be questioned like I did something wrong.
p. 150.6 *

however = in whatever way
I had, however; it was one of the first memories I had of my school.†
p. 122.6

Definitions:

(1) (however as in: However, complications may...)
though (or another expression that connects contrasting ideas)

Based on idea 1 we might not expect idea 2, but this is a way of saying that even though idea 1 exists, we still have idea 2. Synonyms include in spite of that, despite that, nevertheless, nonetheless, on the other hand, in contrast and but.
(2) (however as in: However much she tried...)
to whatever degree (regardless of how much; or whatever unspecified amount)
(3) (however as in: However you do it, get it done!)
in whatever way
(4) (meaning too rare to warrant focus)
Much more rarely (and arguably incorrectly), however can be used to intensify the word how, as when one says "However did you find her?" Grammarians would suggest using two words for that usage: "How ever did you find her?"