Long straddles involve buying a call and put with the same strike price. For example, buy a 100 Call and buy a 100 Put.
A bull call spread consists of one long call with a lower strike price and one short call with a higher strike price. Both calls have the same underlying stock and the same expiration date.
A short strangle consists of one short call with a higher strike price and one short put with a lower strike. Both options have the same underlying stock and the same expiration date, but they have different strike prices.
A naked option is when somebody sells a call or put that is unhedged. The seller collects the options premium, essentially "selling insurance" to whoever is the long contact.
In finance an iron butterfly, also known as the ironfly, is the name of an advanced, neutral-outlook, options trading strategy that involves buying and holding four different options at three different strike prices.
