conjointly vs singly

conjointly

adv
  • In a conjoint manner; jointly or together 

singly

adv
  • Honestly; sincerely; simply. 

  • Individually; particularly; severally. 

  • Without partners, companions, or associates; single-handed. 

  • In a single or unaccompanied manner; without a companion. 

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