What is Infant ?

Before you be mom , please take a look deeply i the meaning of baby in the oher word is infant.

An infant
In basic English usage, an infant is defined as a human child at the youngest stage of life, specifically before they can walk and generally before the age of one

The term "infant" derives from the Latin word in-fans, meaning "unable to speak." There is no exact definition for infancy. "Infant" is also a legal term with the meaning of minor that is, any child under the age of legal adulthood.
A human infant less than a month old is a newborn infant or a neonate. The term "newborn" includes
premature infants, postmature infants and full term newborns.
Upon reaching the age of one or beginning to walk, infants are subsequently referred to as "
toddlers" (generally 12-36 months). Daycares with an "infant room" often call all children in it "infants" even if they are older than a year and/or walking; they sometimes use the term "walking infant".

Aritcle From: http://en.wikipedia.org/wiki/Baby