thermal vs thick

thermal

adj
  • Providing efficient insulation so as to keep the body warm. 

  • Pertaining to heat or temperature. 

  • Caused or brought about by heat. 

  • Having a rough finish by treatment with a blow-torch. 

noun
  • A column of rising air in the lower atmosphere created by uneven heating of Earth's surface. 

verb
  • To create a rough finish on stone by treating it with a high-temperature blow-torch. 

  • To fly an unpowered aircraft in a (thermal) column of rising air. 

thick

adj
  • Having a viscous consistency. 

  • Heavy in build; thickset. 

  • Densely crowded or packed. 

  • Relatively great in extent from one surface to the opposite in its smallest solid dimension. 

  • Difficult to understand, or poorly articulated. 

  • Detailed and expansive; substantive. 

  • Stupid. 

  • Friendly or intimate. 

  • Curvy and voluptuous, and especially having large hips. 

  • Impenetrable to sight. 

  • Deep, intense, or profound. 

  • Measuring a certain number of units in this dimension. 

  • Greatly evocative of one's nationality or place of origin. 

  • Abounding in number. 

noun
  • A stupid person; a fool. 

  • The thickest, or most active or intense, part of something. 

  • A thicket. 

adv
  • Frequently or numerously. 

  • In a thick manner. 

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