PLAIN

DEFINITION:

      ADJECTIVE : if a fact or situation is plain, it's easy to recognize or see.

      ADVERB: plainly

      EXAMPLES: their difficulty is plain .

                            the facts are plain enough.

HOMONYMS:

       A plane is a vehicule with wings and one and more engines that enables it to fly through the                        air.

       A plain is a large, flat area of land with very few trees on it.