oval vs vocal

oval

adj
  • Of or pertaining to an ovum. 

  • Having the shape of an oval. 

noun
  • A thing having such a shape, such as an arena. 

  • In a projective plane, a set of points such that no three are collinear and there is a unique tangent line at each point. 

  • An elongated round shape resembling an egg or ellipse. 

  • A sports field, typically but not exclusively oval in shape. 

vocal

adj
  • Of, pertaining to, or resembling the human voice or speech. 

  • Relating to, composed or arranged for, or sung by the human voice. 

  • Consisting of, or characterized by, voice, or tone produced in the larynx, which may be modified, either by resonance, as in the case of the vowels, or by obstructive action, as in certain consonants, such as v, l, etc., or by both, as in the nasals m, n, ng. 

  • Used in the production of speech sounds. 

  • Synonym of expressive. 

  • Uttered or modulated by the voice; expressed in words. 

  • Full of voices. 

  • Expressing opinions or feelings freely, loudly, or insistently. 

  • Having or exercising the power of producing voice, speech, or sound. 

  • Synonym of vocalic. 

noun
  • A part of a piece of music that is sung. 

  • A musical performance involving singing. 

  • A man in the Roman Catholic Church who has a right to vote in certain elections. 

  • A vocal sound; specifically, a purely vocal element of speech, unmodified except by resonance; a vowel or a diphthong; a tonic element; a tonic. 

How often have the words oval and vocal occurred in a corpus of books? (source: Google Ngram Viewer )