Old English hatian could mean treating as an enemy, persecuting, or injuring; Beowulf puts the verb beside hostile deeds. The deeper claim that pursuit was the first meaning remains open, and the graph says so.

OED’s revised history identifies fiend as an inherited Germanic noun made from the present participle of the hate verb. Old English fēond meant enemy and foe as well as Devil; OED explains Satan as the ultimate Enemy and marks the literal enemy sense obsolete after the medieval period. Cotton MS Vitellius A XV still visibly preserves feondes in a concrete foe’s-footprint scene at Beowulf 2289.

OED and Bosworth–Toller preserve the morphology behind frēond: an inherited nd-stem formation tied to the verb meaning free or love. The same sources then refuse a slogan-sized definition. Old English uses cover close companion, ally or non-enemy, relation, friend of God, friend versus foe, and friends acting as arbitrators. Cotton MS Vitellius A XV folio 152r visibly preserves freondum in a hall filled with favored people at Beowulf 1018. The unveiling is not that friend secretly means love in every sentence; it is that a loving-agent fossil became a socially versatile noun before modern English existed.