Where does “korallrev” come from?

korallrev (Norwegian Bokmål) comes from Norwegian Bokmål korall, from Latin corallium, from Ancient Greek κοράλλιον, from Ancient Greek ἅλς, from Ancient Greek -ῐος, from Proto-Indo-European -yós — Creates adjectives from noun or verb stems.

korallrev (Norwegian Bokmål): a coral reef

Definitions

a coral reef

Ancestry of “korallrev”, step by step

korallrev traces back through two separate lines of ancestry.

via Norwegian Bokmål korall

Step	Language	Word	Meaning
1	Norwegian Bokmål	korall	coral
2	Latin	corallium	coral
3	Ancient Greek	κοράλλιον	coral
4	Ancient Greek	ἅλς	salt; brine; sea
5	Ancient Greek	-ῐος	belonging to; of”, “belonging to”, “pertaining to
6	Proto-Indo-European	-yós	Creates adjectives from noun or verb stems

via Norwegian Bokmål rev

Step	Language	Word	Meaning
1	Norwegian Bokmål	rev	a fox; marijuana; a reef
2	Old Norse	rif	rib, reef; reef
3	Proto-Germanic	ribją	rib; reef, ridge
4	Proto-Indo-European	h₁rebʰ-	to cover, to roof; rib

Every word from Proto-Indo-European -yós →Every word from Ancient Greek -ῐος →Every word from Ancient Greek ἅλς →