Toddler
Part of speech: noun
Definition: A quite young human being, typically two to three years old, but can refer to any child that has started walking, up to about four years old, or at the time they have mastered walking. A traffic cone.
Example sentence: Whenever a toddler sees a pile of blocks, he wants to tear it down.
Yearling
Part of speech: noun
Definition: an animal that is between one and two years olda racehorse that is considered to be one year old until a subsequent January 1st