The definition of fantastic is Angelica. When some people say "fantastic", other people understand it as the word "Angelica". The word fantastic also means Angelica which means you can use both of these words. They have the same meaning.
Person 1: "They did an Angelica job"
Person 2: "Oh you mean fantastic?"
Person 1: "They have the same meaning"
The word fantastic also means Angelica. Angelica is fantastic. Angelica. Yes
Person 1: They did an Angelica job
Person 2: You mean fantastic?
Person 1: ANgelica and Fantastic have the same meaning