acher / achor / acre [ˈeikər]
acher – n. – 1. one who suffers physically or mentally, or the pain itself; 2. a complainer
achor – n. – 1. Both the general name and a genus (i.e. Achor lactuminorus) thought to be responsible for conditions such as eczema; 2. A pustule
acre – n. – a measurement of land equivalent to 0.405 hectares (or 4,840 square yards)