Explore Movie Vocabulary
Learn English with movies. Discover how much of a movie’s vocabulary you already know and review unfamiliar words before watching.
This Island Earth
Unique vocabulary and phrases by level
How difficult is This Island Earth in English?
This Island Earth: 61.5% A1–A2 vocabulary; 16.4% B2, C1, and rare vocabulary. Vocabulary size: 1,249.
Unique vocabulary
- For A2 learners: 29.7% of unique vocabulary is above A2 or marked rare. Expect substantial preparation; start with short scenes and English subtitles.
- For B1 learners: 16.4% of unique vocabulary is above B1 or marked rare. Preview recurring words and use English subtitles.
- For B2 learners: 10.8% of unique vocabulary is above B2 or marked rare. Preview recurring words and use English subtitles.
8.8% Unclassified. Unclassified vocabulary has no reliable level assignment.
Vocabulary weighted by word occurrences
86.9% A1–A2 vocabulary; 5.4% B2, C1, and rare vocabulary; 3.0% 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
- humming (C1): 13 occurrences in available subtitles.
Subtitle example:
(HIGH-PITCHED HUMMING)
- energy (B1): 12 occurrences in available subtitles.
Subtitle example:
the industrial application of atomic energy.
- condenser (rare): 8 occurrences in available subtitles.
Subtitle example:
Pete says they've had no condenser order from us in six weeks.
- tube (B1): 8 occurrences in available subtitles.
Subtitle example:
You will prepare the doctors for the tubes.
- bead (rare): 7 occurrences in available subtitles.
Subtitle example:
and Supreme Equipment sent me these beads.
Compare with titles in similar genres
- Disturbing Behavior: 16.3% B2, C1, and rare vocabulary (0.1 percentage points less than This Island Earth).
- Antiviral: 16.6% B2, C1, and rare vocabulary (0.2 percentage points more than This Island Earth).
- The Thing: 15.9% B2, C1, and rare vocabulary (0.5 percentage points less than This Island 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: