Yes, bisexual individuals are only attracted to other individuals who are either male or female. Pansexual individuals are attracted to not only males and females, but other genders, as well. I used to think that omnisexual meant the same thing as pansexual (maybe it did at one time), but, from reading the definitions on urbandictionary.com, it has taken on a new meaning denoting low standards and distasteful practices. Thus, I no longer use this term.