wander: (verb) to walk slowly; to stroll; to leave the pre-determined path and go a route you choose, often without a clear destination; (noun) the act of wandering
wonder: (noun) a sense of awe, amazement, surprise, or admiration, usually at experiencing something inexplicable or out of the ordinary and often beautiful; (verb) to think curiously about; to want to know; to want to get information or an explanation