We are celebrating our fifth (wedding) 'anniversary' this year. = We are celebrating the fifth 'anniversary' of our wedding this year.
The exhibit will close on the 100th 'anniversary' of the artist's death.
an 'anniversary' party/celebration/dinner
(..) So excited about your letter. Hey Hi Phoebe. Wow, don't you look nice. Yes, I do. Today's, uh, Mike and my one year anniversary. Oh, what's it the anniversary of? Your first, uh, date? Your first kiss? First time you had sex? Yeah! So you must be going somewhere fancy to celebrate. Uh- huh. Um, uh, Knicks game. Uh...aren't you a little over- dressed? Hey, you know what? I've never had a one year anniversary before so no matter where we go, I'm wearig something fancy pants and I'm going to put on my finest jewelry and we're going to have sex in a public restroom (..)2003 TvShow: Friends Title: The One Where Rachel's Sister Babysits Season: 10 Episode 5