This is the 61st most frequent Hebrew word.
כ
The Hebrew letter "כ" (kaf) can mean "as" or "like" when used as a prefix.
כפי is used to mean 'as' or 'like,' especially when introducing a phrase for explanation or analogy.
כפי שאומרים, הזמן עובר מהר כשכיף.
As they say, time flies when having fun.
כ used as the prefix for 'all,' modifying the word 'כל' to mean 'all the.'
כל הכדורים במגרש סודרו בשורה.
All the balls on the field were arranged in a row.
כאשר is used to mean 'when,' often introducing a temporal clause.