A quittor can be where pus has erupted out of the hoof.It is a opening above the coronet band. See link below.
1. What are the causes of unsoundness of cement?
I find that lameness is when something (example: a horse) is disabled so that walking is hard to do or cannot be done. Unsoundness, however, is being weak or infirm. Many people think lameness and unsoundness are the same, but they're not.
when we test the cement with the help of Le-Chatlier apparatus and then we found if the expansion is more than 10 mm then the cement is said to be unsoundness
Unsoundness in pozzolanic materials may be reduced by adding minor components such as alkalis or carbon which is also responsible for the color
Blemish is a noun and a verb.
The blemish was ugly
you have a huge blemish on your forehead!
Example sentence - Amanda had an ugly blemish on her face.
The girl had a huge blemish on her face.
To blemish is to spoil the beauty or perfection of something.
Blemish
There are a number of ways one can try to reduce redness in a blemish. Some different things that are suggested are to mix an aspirin with water and apply to the blemish, apply toothpaste to the blemish before bed, applying ice to the blemish or applying a tea bag or lemon juice to the blemish.