Can sj be approximated with a breathy “hfw”, because that’s how it sounds to me?

Yes, you use it to talk about location, it just means you say where something is!.. also:

Use om to mean "about", but never with approximations, with that I mean, you cannot use om to refer to the number of people in one place, for example. .(There are about/around three book in my backpack- don't use om), so:

• A book about Einstein: en bok om Einstein. • We talk about you: vi pratar om du

When talking about time, you use om to mean "in"/ "within":

• I'll be there in four hours: Jag kommer att vara där om fyra timmar, and yes!, you can also use i here! •In two decades: om två årtionden.

Ufff, one more! om also means "around", referring to a place, and never approximations of quantities, as explained above, Here runt and kringare also possible:

• Marie has flowers around her house: Marie har blommor om/runt/kring hennes hus.

•I put a fence around the yard: Jag satte ett staket runt gården

It means "a" when referring to a daily or yearly frequency, here the "formula" is om + noun(en- et), so, let's see: •I go to school twice a day: jag går till skolan två gånger om dagen.

•Jag reser till England fem gånger om året. You can say "per år" when you don't talk about a daily or yearly frequency you say like that: "i + noun(en-et)" or "per + noun":

•I work three times a week: Jag arbetar tre gånger i veckan/ per vecka

• My father likes to walk through the park four times a week: Min pappa gillar att gå igenom parken fyra gånger i veckan/ per vecka

It means "of" when you mean possession, but it is not much used!

Generally speaking, we use om for location and av for possession. There are more differences, but that's the reason we use om in this case.

(For anyone who knows a bit about situated language processing, om is used for grounding relative entity placements.)

norr is the noun and aderb form of which nord is the older (but still somewhat used) variation.

norra is the adjective form.

You can find links to the other equivalents here: https://sv.wiktionary.org/wiki/nord - look under "Se även". :)

No, it can't mean on the lake, only on the north side of it.

The sea is salt. Havet.