Explore Movie Vocabulary
Learn English with movies. Discover how much of a movie’s vocabulary you already know and review unfamiliar words before watching.
Planet 51
Unique vocabulary and phrases by level
How difficult is Planet 51 in English?
Planet 51: 68.6% A1–A2 vocabulary; 14.3% B2, C1, and rare vocabulary. Vocabulary size: 1,057.
Unique vocabulary
- For A2 learners: 24.6% of unique vocabulary is above A2 or marked rare. Expect substantial preparation; start with short scenes and English subtitles.
- For B1 learners: 14.3% of unique vocabulary is above B1 or marked rare. Preview recurring words and use English subtitles.
- For B2 learners: 10.2% of unique vocabulary is above B2 or marked rare. Preview recurring words and use English subtitles.
6.9% Unclassified. Unclassified vocabulary has no reliable level assignment.
Vocabulary weighted by word occurrences
90.3% A1–A2 vocabulary; 4.1% B2, C1, and rare vocabulary; 2.1% Unclassified.
This counts repeated eligible words. Phrases are excluded from this calculation to avoid counting their component words twice.
Recurring words and phrases to preview
- alien (B2): 62 occurrences in available subtitles.
Subtitle example:
You will all become my alien zombies.
- lightning (B1): 15 occurrences in available subtitles.
Subtitle example:
¢Ü Greased Lightning Go, Greased Lightning
- planet (B1): 15 occurrences in available subtitles.
Subtitle example:
Next to that, kid, our planets are just dust in the wind.
- general (B1): 14 occurrences in available subtitles.
English meaning: A senior military officer; as an adjective, relating to most people or things.
Subtitle example:
Excuse me! General! He does go to the high school.
- base (B1): 11 occurrences in available subtitles.
Subtitle example:
Base destruct, two minutes.
Compare with titles in similar genres
- The Little Prince: 14.3% B2, C1, and rare vocabulary (0.0 percentage points more than Planet 51).
- The Ant Bully: 14.2% B2, C1, and rare vocabulary (0.1 percentage points less than Planet 51).
- Up: 14.2% B2, C1, and rare vocabulary (0.1 percentage points less than Planet 51).
These percentages describe vocabulary, not the proportion of dialogue you will understand. CEFR labels are estimates, not official film ratings. Accent, speed, songs, context, and your own vocabulary also affect comprehension. Repeated occurrences may include repeated dialogue or lyrics.
How we estimate vocabulary difficulty · Evidence generated: