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 Earth
Is Planet Earth difficult to watch in English? Explore its vocabulary difficulty, estimated English level, and unfamiliar words before watching.
Unique vocabulary and phrases by level
How difficult is Planet Earth in English?
Planet Earth: 36.3% A1–A2 vocabulary; 35.4% B2, C1, and rare vocabulary. Vocabulary size: 3,386.
Unique vocabulary
- For A2 learners: 49.0% of unique vocabulary is above A2 or marked rare. Expect substantial preparation; start with short scenes and English subtitles.
- For B1 learners: 35.4% of unique vocabulary is above B1 or marked rare. Expect substantial preparation; start with short scenes and English subtitles.
- For B2 learners: 28.2% of unique vocabulary is above B2 or marked rare. Expect substantial preparation; start with short scenes and English subtitles.
14.7% Unclassified. Unclassified vocabulary has no reliable level assignment.
Vocabulary weighted by word occurrences
81.3% A1–A2 vocabulary; 8.9% B2, C1, and rare vocabulary; 4.5% Unclassified.
This counts repeated eligible words. Phrases are excluded from this calculation to avoid counting their component words twice.
Subtitle coverage: 11 of 11 episodes; the profile describes only available subtitles.
Recurring words and phrases to preview
- planet (B1): 59 occurrences in available subtitles.
Subtitle example:
Now, over six billion crowd our fragile planet.
- surface (B1): 40 occurrences in available subtitles.
Subtitle example:
This forest covers only 3% of the planet's surface
- predator (C1): 34 occurrences in available subtitles.
Subtitle example:
but they're, nonetheless, the continent's most efficient predators.
- creature (B1): 33 occurrences in available subtitles.
Subtitle example:
The penguins stay when all other creatures have fled
- vast (B2): 33 occurrences in available subtitles.
Subtitle example:
But the vast herds do not travel alone.
Compare with titles in similar genres
- Cosmos: A Spacetime Odyssey: 35.6% B2, C1, and rare vocabulary (0.2 percentage points more than Planet Earth).
- Our Planet: 33.8% B2, C1, and rare vocabulary (1.7 percentage points less than Planet Earth).
- The Blue Planet: 32.6% B2, C1, and rare vocabulary (2.8 percentage points less than Planet Earth).
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: