You mix and disrupt me,
But it makes me stronger.
You just ignore me,
But I get harder the longer.
To cap it off,
It’s surprising to see,
You end up walking
All over me.
Two definitions for two different words will be given. These words will differ only by their vowels. To change a word, both adding a vowel and changing a vowel is allowed, as long as the consonants are the same and in the same order. For example, bust to beast can be an answer.
1. A sticky product of trees to a type of dried fruit
2. A black bird to a chasm
3. Round object to a fee
4. Part of the body below the leg to a great achievement