Are Titles important in art?

If art needs an observer what does the title do

does it change the observation

does it conceal or even misguide

does it elaborate

does it draw conclusions

does it substract or addd to the part of an artpiece

does it differ in form of arts

does it help  ake art more artfull

 bow is it part of art

is it an attachcment

is it a form of zeitgeist