"The man swims towards the woman."
Translation:Manden svømmer henimod kvinden.
Both imod and henimod mean toward in english and both are an adverb and a preposition. Henimod seems to be used between a man and a woman or two people and imod is often used when 2 people are against each other as kæmpe imod or in opposition or against something. But the examples also use animals as coming imod ham for toward him.. Hope this helps.