Learn is not an adjective so learn doesn't have a comparative or superlative form.
Learned is an adjective.
The comparative form is more learned. When it come to physics Einstein was more learned than Plato
The superlative form is most learned. James is the most learned technician in the department
The comparative and superlative degrees of clean are cleaner and cleanest.
out
Get is a verb and does not have comparative or superlative degrees.
Comparative and superlative degrees are for adjectives and adverbs. House can be used as a noun or a verb and does not have comparative or superlative forms.
more out, most out
more in, most in
more in, most in
The comparative degree of "noisy" is "noisier" and the superlative degree is "noisiest."
The three degrees (of comparison) for adjectives are Positive, Comparative and Superlative. Example: hard (positive) harder (comparative) hardest (superlative)
The comparative and superlative degrees of "white" are formed in the standard way: "whiter" and "whitest" respectively.
greater & greatest
softer softest