Explore Movie Vocabulary
Learn English with movies. Discover how much of a movie’s vocabulary you already know and review unfamiliar words before watching.

Human Planet
Is Human Planet 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 Human Planet in English?
Human Planet: 42.4% A1–A2 vocabulary; 30.1% B2, C1, and rare vocabulary. Vocabulary size: 3,811.
Unique vocabulary
- For A2 learners: 44.0% of unique vocabulary is above A2 or marked rare. Expect substantial preparation; start with short scenes and English subtitles.
- For B1 learners: 30.1% of unique vocabulary is above B1 or marked rare. Expect substantial preparation; start with short scenes and English subtitles.
- For B2 learners: 22.8% of unique vocabulary is above B2 or marked rare. Expect substantial preparation; start with short scenes and English subtitles.
13.6% Unclassified. Unclassified vocabulary has no reliable level assignment.
Vocabulary weighted by word occurrences
85.9% A1–A2 vocabulary; 6.6% B2, C1, and rare vocabulary; 3.3% Unclassified.
This counts repeated eligible words. Phrases are excluded from this calculation to avoid counting their component words twice.
Subtitle coverage: 8 of 8 episodes; the profile describes only available subtitles.
Recurring words and phrases to preview
- crew (B2): 41 occurrences in available subtitles.
Subtitle example:
Benjamin and the rest of the crew
- planet (B1): 34 occurrences in available subtitles.
Subtitle example:
This is the Human Planet.
- creature (B1): 31 occurrences in available subtitles.
Subtitle example:
All the creatures found here are perfectly adapted to thrive in the ocean...
- shark (B1): 31 occurrences in available subtitles.
Subtitle example:
Possessing the mysterious ability to summon sharks from the deep,
- hunter (C1): 30 occurrences in available subtitles.
Subtitle example:
we've become remarkably efficient oceanic hunters.
Compare with titles in similar genres
- Nathan for You: 30.0% B2, C1, and rare vocabulary (0.1 percentage points less than Human Planet).
- Frozen Planet: 29.8% B2, C1, and rare vocabulary (0.3 percentage points less than Human Planet).
- Planet Earth II: 30.8% B2, C1, and rare vocabulary (0.6 percentage points more than Human Planet).
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: