Party Theme Decor

party
A formally constituted political group, typically operating on a national basis, that contests elections and attempts to form or take part in a government
an organization to gain political power; "in 1992 Perot tried to organize a third party at the national level"
a group of people gathered together for pleasure; "she joined the party after dinner"
A social gathering of invited guests, typically involving eating, drinking, and entertainment
have or participate in a party; "The students were partying all night before the exam"
A group of people taking part in a particular activity or trip, esp. one for which they have been chosen

theme
The subject of a talk, a piece of writing, a person's thoughts, or an exhibition; a topic
subject: the subject matter of a conversation or discussion; "he didn't want to discuss that subject"; "it was a very sensitive topic"; "his letters were always on the theme of love"
a unifying idea that is a recurrent element in literary or artistic work; "it was the usual `boy gets girl' theme"
provide with a particular theme or motive; "the restaurant often themes its menus"
The first major constituent of a clause, indicating the subject-matter, typically being the subject but optionally other constituents, as in “poor he is not.”
An idea that recurs in or pervades a work of art or literature

decor
interior decoration: decoration consisting of the layout and furnishings of a livable interior
The furnishing and decoration of a room
The style of decoration of a room, building
Interior design is a multi-faceted profession in which creative and technical solutions are applied within a structure to achieve a built interior environment.
The decoration and scenery of a stage