different between senselessness vs lunacy

English

Etymology

From senseless +? -ness

Noun

senselessness (usually uncountable, plural senselessnesses)

1. The state of being senseless; unsense.
   • November 2 2014, Daniel Taylor, "Sergio Agüero strike wins derby for Manchester City against 10-man United," guardian.co.uk

     They had contributed heavily to their own downfall, most glaringly with the senselessness of Chris Smalling’s red card, and they should know by now that Manuel Pellegrini’s team are not the kind of opponents to pass up these kind of handouts.

Synonyms

• unsense

Translations

References

• senselessness in The Century Dictionary, New York, N.Y.: The Century Co., 1911.
• senselessness in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.

English

Etymology

From lunatic +? -cy.

Pronunciation

• (UK) IPA^(key): /?lu?.n?.si /, /?lju?.n?.si/
• (US) IPA^(key): /?lu?.n?.si /

Noun

lunacy (countable and uncountable, plural lunacies)

1. (of a person or group of people) The state of being mad, insanity
   1. a cyclical mental disease, apparently linked to the lunar phases
   2. insanity implying legal irresponsibility.
2. Something deeply misguided.

Synonyms

• (state of being mad): insanity, madness, craziness, craze

Translations