Two techniques, _______________ and ___________________, use ...

[Davideckstein7]

Two techniques, _______________ and ___________________,
  use high-speed computers to create images out of highly abstract
  mathematical data.
 
  Fill in the blank(s) with the appropriate word(s).

Question 2

When designing symbols or icons, _____________ are easier to
  represent than ________________ because drawing a thing is
  easier than drawing an action.
 
  Fill in the blank(s) with the appropriate word(s).

[diana chang]

Answer to Question 1

visualization, medical imaging

Answer to Question 2

nouns, verbs