Find a series of words using the following clues:
1) The first word is an old British silver coin.
2) The second word is a sound uttered in grief or pain. This word is formed by replacing a letter in the first word with another letter.
3) The third word means "advance in growth". This word is formed by replacing a letter in the second word with another letter.
4) The fourth word is dark color. This word is formed by replacing a letter in the third word with another letter.
Find these four words.