när meaning in English — as, nigh, when

English meaning

as conj Used to compare two things that are equal, alike, or happening at the same time.
nigh adverb Close in time or space; almost — an old-fashioned or literary word for "near."
when adv Used to ask or refer to a point in time.

när is used for these senses in English:

as To such an extent or degree; to the same extent or degree.
as In the (same) way or manner that; to the (same) degree that.
as At the same time that, during the same time when: while.
as (numismatics, Ancient Rome) Any of several coins of Rome, coined in bronze or later copper; or the equivalent value.
as Introducing a basis of comparison, with an object in the objective case.
nigh (archaic, poetic) Near, close by.
when (interrogative) At what time? At which time? Upon which occasion or circumstance? Used to introduce direct or indirect questions about time.
when At what time; at which time.

conj Used to compare two things that are equal, alike, or happening at the same time.
conj Because; since (giving a reason).
prep In the role or function of.
adv Used before an adjective or adverb in comparisons of equal degree, typically paired with a second "as".

då lika ... som medan under tiden som eftersom såsom nära närpå nästan närma