In what ways is the genre science-fiction used in Interstellar and in the novel Never let me go by Kazuo Ishiguro

Write a 5-paragraph essay in 500-800 words:

(Genre: science fiction)

Critics have labeled both Never Let Me Go by Kazuo Ishiguro and Interstellar (movie, 2014) as works of science fiction, yet the works differ drastically from one another.
In what ways do these two works stay true (or differ) from the science-fiction genre?