synonym. umm, well, like :
stupid and idiot, they're synonyms.
homonyms mean words that sound the same :)
Hope this helps!
Substitution
In basketball, a substitution is when one player goes in for another.
frameshift mutation
substitution
In mathematics substitution is when one term in an equation is replaced by another that has a known value. This is so that the equation itself can be resolved.
A substitution reaction is one where one functional group replaces another. For example, the -OH group on an alcohol could be replaced by a Bromine atom from NaBr.
Mutations
Substitution.
Morphology of individual organism identifies and distinguishes one living thing from another.
Point mutations
A substitution mutation in genetics is where one of the nucleotide bases of DNA is swapped for another. These mutations may or may not affect the protein that is being coded.
The marginal rate of technical substitution refers to the rate at which one input can be substituted for another input without changing the level of output. It can also be defined as the more complete name for the marginal rate of substitution between factors in a production function, sometimes used to distinguish it from the analogous concept in a utility function.