Also called semantic shift, lexical change, and semantic progression
Semantic change (also semantic shift, semantic progression, semantic
development, or semantic drift) is the evolution of word usage
There are many different types of semantic change, such as:
Narrowing: Change from superordinate level to subordinate level. For example, skyline formerly referred to any horizon, but now in the USA, it has narrowed to a horizon decorated by skyscrapers.
Widening: There are many examples of specific brand names being used
for the general product, such as with Kleenex. Such uses are known as
Metaphor: Change based on similarity of thing. For example, broadcast
originally meant "to cast seeds out"; with the advent of radio and
television, the word was extended to indicate the transmission of
audio and video signals. Outside of agricultural circles, very few use
broadcast in the earlier sense.
Metonymy: Change based on nearness in space or time, e.g., jaw "cheek"
Synecdoche: Change based on whole-part relation. The convention of
using capital cities to represent countries or their governments is an
example of this.
Hyperbole: Change from weaker to stronger meaning, e.g., kill
"torment" → "slaughter"
Meiosis: Change from stronger to weaker meaning, e.g., astound "strike
with thunder" →
Degeneration: e.g., knave "boy" → "servant" → "deceitful or despicable
Elevation: e.g., knight "boy" → "nobleman".
I'd say this is an example of semantic metaphor , where the change is based on the similarity of the thing (film --> movie)
See this article from ThoughtCo: