limit vs lower limit

limit and lower limit both are nouns.

Word	Noun	Adjective	Verb	Adverb
limit	Yes	No	Yes	No
lower limit	Yes	No	No	No

As nouns, lower limit is a hyponym of limit; that is, lower limit is a word with a more specific, narrower meaning than limit:

Other hyponyms of limit include edge, city limit, city limits, upper limit, three-mile limit.

limit (noun)	lower limit (noun)
the greatest possible degree of something	the limit on the lower (or southernmost) side of something
the boundary of a specific area	the smallest possible quantity
as far as something can go
the greatest amount of something that is possible or allowed
the mathematical value toward which a function goes as the independent variable approaches infinity
final or latest limiting point

limit (verb)	lower limit (verb)
restrict or confine within limits
place limits on (extent or amount or access)
decide upon or fix definitely