Analogy (disambiguation)
Analogy, analogical and analog relate to comparisons between things based on shared elements. Analog ()  subsequently relates to continuous (rather than digital or discrete) signals. Related topics are:

Science 
 Analogy (biology), a similarity of trait or organ in two unrelated organisms
  Functional analog (chemistry)
 distinct from Functional analog (electronic) analysis
 Structural analog (chemistry)
 distinct from Structural analog (electronic) analysis
 Analogical modeling, a linguistic theory

Engineering 
 Analogical models, an analysis and simulation approach
 Analog computer, a computer using physical continuous values, as distinct from a digital computer
 Analog signal, a continuous-time signal
 Analogue electronics/Analog circuits, electronics system with continuously variable signal
 Analog signal processing, signal processing conducted on continuous analog signals 
 Analog device 
 Analog synthesizer, a synthesizer that uses analog circuits and analog signals to generate sound electronically. Analog chip, a set of miniature electronic analog circuits formed on a single piece of semiconductor material
 Analog verification
 Analog-to-digital converter, Digital-to-analog converter
 Analog neural network
 Hydraulic analogy
  Electrical-Hydraulic analogy, representation of electrical circuits as hydraulic circuits
  Aerodynamic-Hydraulic analogy, representation of the behaviour of compressible fluids as (non-compressible) hydraulic behaviour
 Mechanical-electrical analogies, representation of mechanical systems as electrical networks
 Impedance analogy, focus on same effective impedance
 Mobility analogy, focus on same topology

Culture 
 Analogy (album), an album released in 1972 by the band Analogy
 Analogy (band), a German and Italian rock band active in the 1970s

See also
Analog (disambiguation)