mature vs mellow

mature

verb
  • To make (something, e.g. fruit) ripe or mature. 

  • To attain maturity, to become mature or ripe. 

  • To make (someone) mature. 

  • To proceed toward maturity: full development or completion (either of concrete or of abstract things, e.g. plans, judgments, qualities). 

  • To proceed toward or become mature or full-grown, either physically or psychologically; to gain experience or wisdom with age. 

  • To bring (something) to maturity, full development, or completion. 

  • To reach the date when payment is due. 

adj
  • Brought to a state of complete readiness. 

  • Profound; careful. 

  • Fully developed; grown up in terms of physical appearance, behaviour or thinking; ripe. 

  • Suitable for adults only, due to sexual themes, violence, etc. 

mellow

verb
  • To cause (fruit) to become soft or tender, specifically by ripening. 

  • To cause (food or drink, for example, cheese or wine, or its flavour) to become matured and smooth, and not acidic, harsh, or sharp. 

  • To reduce or remove the harshness or roughness from (something); to soften, to subdue, to tone down. 

  • To mature and lose its harshness or sharpness. 

  • Followed by out: to relax (a person); in particular, to cause (a person) to become pleasantly high or stoned by taking drugs. 

  • To relax; in particular, to become pleasantly high or stoned by taking drugs. 

  • To be rendered soft and suitable for planting in. 

  • To cause (a person) to become calmer, gentler, and more understanding, particularly from age or experience. 

  • To lose harshness; to become gentler, subdued, or toned down. 

  • To soften (land or soil) and make it suitable for planting in. 

  • To cause (a person) to become slightly or pleasantly drunk or intoxicated. 

noun
  • The property of being mellow; mellowness. 

  • Also main mellow: a close friend or lover. 

  • A comfortable or relaxed mood. 

adj
  • Soft and easily penetrated or worked; not hard or rigid; loamy. 

  • Pleasantly high or stoned, and relaxed after taking drugs; also, of drugs: slightly intoxicating and tending to produce such effects. 

  • Fruitful and warm. 

  • Matured and smooth, and not acidic, harsh, or sharp. 

  • Pleasing in some way; excellent, fantastic, great. 

  • Cheerful, genial, jovial, merry; also, easygoing, laid-back, relaxed. 

  • Soft or tender by reason of ripeness; having a tender pulp. 

  • Mature; of crops: ready to be harvested; ripe. 

  • Not coarse, brash, harsh, or rough; delicate, rich, soft, subdued. 

  • Well-matured from age or experience; not impetuous or impulsive; calm, dignified, gentle. 

  • Drunk, intoxicated; especially slightly or pleasantly so, or to an extent that makes one cheerful and friendly. 

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