So in the rules it states
A command word can be a real word, but when this is the case, the holder of the item runs the risk of activating the item accidentally by speaking the word in normal conversation. More often, the command word is some nonsensical word, or a word or phrase from an ancient language. Activating a command word magic item is a standard action and does not provoke attacks of opportunity.
This seems to say that command words can be accidentally activated, but then it states that it is a standard action. It also states that
Command word activation means that a character speaks the word and the item activates. No other special knowledge is needed.
Since speaking is a free action, this seems to contradict itself. Does it mean that directing the effect of a magic item is a standard action? Say, I have a Crown of blasting(which states when command is spoken) on my head, and the command word is set to "light", and i forget this and say "Hey jargon, Can you light that candle", would the helmet go off and be undirected and hit the candle or jargon (depending on which I was looking at) If it happened in battle would I waste the blast and a standard action because I Spoke the word?