Some Adverb are made up of noun and a qualifying adjective

English as a Second Language English Vocabulary, Grammar and Idioms
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  1. Some Adverb are made up of noun and a qualifying adjective.Can you tell me out of these words which are noun and qualifying adjectives please.
    yesterday,midway,otherwise,sometimes,meantime,meanwhile.

2)Some adverbs are compunds of on (weakened to a) and a Noun;as
Afoot,abed,asleep,ahead,aboard, away.
What does this sentence mean ,can you explain me with the help of these egs.

  1. similarly there are other adverbs which are also compounds of some preposition and a Noun;as
    Betimes,besides,to-day,to-morrow, overboard
    Here can u tell me which of them are prepositions and nouns please