lower-class vs upper-lower-class

lower-class and upper-lower-class both are adjectives.

Word	Noun	Adjective	Verb	Adverb
lower-class	No	Yes	No	No
upper-lower-class	No	Yes	No	No

lower-class (adjective)	upper-lower-class (adjective)
occupying the lowest socioeconomic position in a society	occupying the upper part of the lower class