OK wonky grammar post ahead:
"Alter"--to change. "I altered the dress to fit my sister."
"Altar"--the "table" in a church. The place where the Eucharist is consecrated. Whatever you want to call it. "The servers approached the priest, who was at the altar."
THEY ARE NOT INTERCHANGEABLE. THANK YOU.
PS--I would also like to add that one is a verb, the other a noun. So they are REALLY not interchangeable. You cannot get up and "altar", as my seventh grade English teacher would say. You can, however, get up and "alter" something.
“No man is above canon law!”
13 hours ago