As nouns the difference between mam and missy
is that mam is diminutive of mother while missy is a young female; miss.
As proper nouns the difference between mam and missy
is that mam is a Mayan language spoken in the Mexican state of Chiapas and the Guatemalan departments of Quetzaltenango, Huehuetenango, San Marcos, and Retalhuleu while Missy is a diminutive of the female given name Melissa.
As an adjective missy is
of, or pertaining to, female clothing or clothing sizes.
mam
English
Noun
(
en noun)
(informal, and, colloquial) Diminutive of mother.
Usage notes
Used in place of mum or ma in Northumbrian dialects such as Geordie, as well as throughout Ireland and Liverpool.
References
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