soft vs weak

soft

adj
  • Lacking strength or resolve; not tough, wimpy. 

  • Of a ferromagnetic material; a material that becomes essentially non-magnetic when an external magnetic field is removed, a material with a low magnetic coercivity. (compare hard) 

  • Expressing gentleness or tenderness; mild; conciliatory; courteous; kind. 

  • Requiring little or no effort; easy. 

  • Voiced; sonant; lenis. 

  • Voiceless. 

  • Gentle. 

  • Low in dissolved calcium compounds. 

  • Smooth and flexible; not rough, rugged, or harsh. 

  • Easily giving way under pressure. 

  • Emulated with software; not physically real. 

  • Not likely to cause addiction. 

  • Not containing alcohol. 

  • Weak in character; impressible. 

  • Not harsh or offensive to the sight; not glaring or jagged; pleasing to the eye. 

  • Gentle in action or motion; easy. 

  • Incomplete, or temporary; not a full action. 

  • Effeminate. 

  • Of a market: having more supply than demand; being a buyer's market. 

  • softcore. 

  • Palatalized. 

  • Not bright or intense. 

  • Physically or emotionally weak. 

  • Foolish. 

  • Agreeable to the senses. 

  • Having a slight angle from straight. 

  • Made up of nonparallel rays, tending to wrap around a subject and produce diffuse shadows. 

  • Quiet. 

noun
  • A soft sound or part of a sound. 

  • A soft or foolish person; an idiot. 

weak

adj
  • Lacking in force (usually strength) or ability. 

  • That does not ionize completely into anions and cations in a solution. 

  • Not having power to convince; not supported by force of reason or truth; unsustained. 

  • Lacking in vigour or expression. 

  • Unable to sustain a great weight, pressure, or strain. 

  • Definite in meaning, often used with a definite article or similar word. 

  • One of the four fundamental forces associated with nuclear decay. 

  • Dilute, lacking in taste or potency. 

  • Showing less distinct grammatical endings. 

  • Having a narrow range of logical consequences; narrowly applicable. (Often contrasted with a strong statement which implies it.) 

  • Not prevalent or effective, or not felt to be prevalent; not potent; feeble. 

  • Tending towards lower prices. 

  • Unable to withstand temptation, urgency, persuasion, etc.; easily impressed, moved, or overcome; accessible; vulnerable. 

  • Bad or uncool. 

  • Regular in inflection, lacking vowel changes and having a past tense with -d- or -t-. 

  • Resulting from, or indicating, lack of judgment, discernment, or firmness; unwise; hence, foolish. 

  • Lacking contrast. 

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