thee vs ya

thee

noun

  • The letter ⟨(⟩, which stands for the th sound /ð/ in Pitman shorthand. 

verb

  • To address (a person) using the pronoun thee. 

  • To use the word thee. 

ya

noun

  • A letter of the Cyrillic alphabet: Я, я. 

adv

  • yea; yes 

intj

  • Go. (Spoken to horses and cattle.) 

  • Yeah; yes. 

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