Question: toward & towards; forward & forwards

For reference: http://tenser.typepad.com/tenser_said_the_tensor/2004/05/toward_and_towa.html

toward prep. towards, for, in order to adj. promising, favorable, approaching, gentle toward to.ward AHD: D.J. K.K. prep. also (preposition) used as well as towards AHD: In the direction of: moving in the direction of…: driving toward home. Driving in the direction of home. In a position facing: facing: in a position that faces…: had his back toward me. With his back turned to me. Somewhat before in time: shortly before: a little earlier in time than…: It began to rain toward morning. It started to rain just before morning. With regard to; in relation to: concerning…； Related to…: An optimistic attitude toward the future. An optimistic outlook on the future. To further or partially fulfill: To promote or achieve in part: Contributed five dollars toward the bill. Paid another five dollars to settle the debt. With the aim of achieving; intended to: To reach a certain goal: Aiming to accomplish it ； Aiming for…: efforts toward peace. Efforts made for peace. Adj. (Adjective) AHD: Favors success or a good outcome; favorable. Promising success: conducive to success or a good result ； Fortunate. Often implies something that will happen soon; imminent. It is often used to indicate something that will take place in a short time ； Obsolete Being: quick to understand or learn. 【Obsoletely used】 Someone who can understand or learn things quickly. From Middle English; originates from Old English t½d. Some critics have tried to identify a semantic difference between \"toward\" and \"towards\", but such a difference is purely dialectal. \"Toward\" is more common in American English, while \"towards\" is the predominant form in British English. \"Toward\" is more common in American English, while in British English \"towards\" is the main form; toward prep. = towards

Doing ADV means the same thing, but FORWARD can also be used as V and ADJ, whereas FORWARDS cannot.