Where does “fotsvamp” come from?

fotsvamp (Swedish) comes from Swedish fot, from Old Swedish fōter, from Old Norse fótr, from Proto-Germanic fōts, from Proto-Indo-European pṓds, from Proto-Indo-European póds, from Proto-Indo-European ped- — to walk, to step; to stumble, to fall.

fotsvamp (Swedish): athlete's foot, tinea pedis

Definitions

athlete's foot, tinea pedis

Ancestry of “fotsvamp”, step by step

fotsvamp traces back through two separate lines of ancestry.

via Swedish fot

Step	Language	Word	Meaning
1	Swedish	fot	a foot; the body part touching the ground while...
2	Old Swedish	fōter	foot
3	Old Norse	fótr	a foot
4	Proto-Germanic	fōts	foot
5	Proto-Indo-European	pṓds	foot
6	Proto-Indo-European	póds	foot
7	Proto-Indo-European	ped-	to walk, to step; to stumble, to fall

via Swedish svamp

Step	Language	Word	Meaning
1	Swedish	svamp	fungus; mushroom; sponge
2	Old Swedish	svamper	fungus, mushroom
3	Old Norse	svampr	—
4	Proto-Germanic	*swammaz	—
5	Proto-Indo-European	swombh-	sponge, tree-fungus, swamp

Every word from Proto-Indo-European ped- →Every word from Proto-Indo-European póds →Every word from Proto-Indo-European pṓds →