The language of each era. Counted, not interpreted.

How often twenty-four words and phrases appeared in American English books, year by year. A rise means a word was printed more, by supporters, opponents and historians alike. It is a measure of attention, not of sentiment.

Ideologies

Founding ideas

Rights

Emergency and security

Choose up to three terms to compare.

  • nationalism
  • fascism
  • democracy
Uses per million phrases of the same length in American English books (Google Books Ngram, case-insensitive), retrieved 2026-10-25. The corpus ends in 2022. Frequency measures how often a word was printed, not whether writers supported or opposed what it names.

When each term peaked. Five-year average.

The year each term was printed most often between 1789 and 2022, and the era it fell in.

Ideologies

nationalism
2022 The recent era
fascism
1937 The interwar years and the New Deal
communism
1962 Civil rights and Vietnam
totalitarianism
2022 The recent era
authoritarianism
2022 The recent era
populism
2022 The recent era
isolationism
1944 World War II

Founding ideas

constitution
1860 Sectional crisis and Civil War
liberty
1795 The founding
democracy
2022 The recent era
tyranny
1793 The founding
rule of law
2022 The recent era
patriotism
1814 The early republic

Rights

civil liberties
2006 After September 11
civil rights
2001 After September 11
due process
1834 The early republic
free speech
2021 The recent era
equal protection
1834 The early republic
suffrage
1868 Reconstruction
segregation
2022 The recent era

Emergency and security

habeas corpus
1863 Sectional crisis and Civil War
martial law
1863 Sectional crisis and Civil War
unconstitutional
1832 The early republic
national security
2008 After September 11

How to read it. And how not to.

It counts words, not opinions. A book warning against fascism and a book advocating it both count the same. Constilumen does not score sentiment, because automated sentiment scoring is unreliable on historical text and would put a judgment on the chart.

Meanings drift. “Liberty” in 1800 and “liberty” in 2000 are the same letters with different associations. The chart cannot see that.

The corpus is books. It reflects what was published and digitized, which over-represents some voices and periods. Newspapers, speech and private writing are not included.

The record ends in 2022. That is the last year the source publishes. Constilumen will not extend it with estimates.

The full method is on the Methodology page.

Words beside events. On the timeline.

Add any of these terms as a lane under the decisions and laws of the same years.

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