wdross wrote:
As the dictionary indicates, one can be used for the other. But there is a slight difference in connotation (hence, two different words). "Leery" has more of a connotation of knowing about and/or using avoidance or shying away. "Wary" has more of a connotation of knowing about and/or continuing on with caution, not necessarily shying away.
Synonyms - wary often used in regard being cautious of possible danger.