Problems is a noun, the plural form of problem.
A problem is a thing, which places it in the Noun category.
The surgeon destroys part of the thalamus. However, the procedure is complicated by numbness, balance problems, or speech problems in a significant number of cases.
Speech therapy is just as the title suggests it helps the residents with speech problems and some also help with swallowing problems. The therapy identifies problems with the speech and communications and develops plans to help overcome these problems.
part of speech
The part of speech for this particular word is a noun.
The part of speech for "answer" is a noun.
adverb
what part of speech is beneath
A speech therapist corrects speech problems and impediments. They also work on hearing problems and articulation problems. They may teach sign language or lip reading. You may contact one through your local school district or county schools office, some are in private practice, a hospital may have one or contact the college near you that has a program as part of the education department/speech communication departments.
The part of speech for "explicit" is an adjective.
The part of speech for "twirl" is a verb.
The part of speech for "unfamiliar" is an adjective.