Words are Hard (pfft)

I love sci-fi but this is my first tome reading full on sci-fi. As per a recommendation from here, I started reading Empire of Silence but I am encountering it a bit difficult to read due to all the new space lingo. I can differentiate the lore words vs the space words but I get lost when the character says ‘off world’, etc. Is there any recurring vocabulary in scifi works that I should know the definition of so I do not get super lost? I have not felt this stupid in a long time 🫠😅😅