The new Unity 3D interface has brought a lot of changes , innovation, an easiness in desktop interaction, but, also, a little bit of naming-related confusion among the common user , who may feel overwhelmed by this "complex" names given to Unity's components.
Unity is build upon the principle of easiness, openness and has a complex desktop approach but intuitive parts whom the regular user can identify/operate upon quite easy.
In the above picture, you can see its components: