Problem solving is the act of defining a problem; determining the cause of the problem; identifying, prioritizing, and selecting alternatives for a solution; and implementing a solution.

A problem is a situation, question, or thing that causes difficulty, stress, or doubt. Problem has a few other senses as a noun and an adjective.

something that causes trouble or difficulty. a major cause of traffic problems in the city. problem of: the problem of unemployment.

Problem is a countable noun and describes something that causes trouble or difficulty.

verb. To find a solution to a difficult or complex question or situation; to engage in the actions or thoughts necessary to discover solutions to problems. Also with object: to think out, grapple with, or solve (a problem).

problem solving—when used as a noun. Hyphenate when used as a modifier: The course examines problem solving in organizations.

problem-solving noun – Definition, pictures, pronunciation and usage notes | Oxford Advanced American Dictionary at OxfordLearnersDictionaries.com.

Since problem solving follows the noun (skills), no hyphen is needed.

As I described above, when an adjectives follows a noun, then you do not need to use a hyphen: We have many fully furnished short term properties to rent across the UK.

fully adverb (COMPLETELY)

Hyphenated compound words are formed when two separate words are joined together by a hyphen. Examples of hyphenated compound words include: two-fold.

A compound noun is two words put together to make one word. For example, toothpaste, a paste which you use to clean your teeth (tooth+paste=toothpaste)!

birth. verb. birthed; birthing; births. Definition of birth (Entry 2 of 3) transitive verb.

It is both a past participle and an adjective. “Born” is the past participle of the verb “bear” only when it’s used in the sense of birth. It is also used as an adjective in the same sense.

(countable) A beginning or start; a point of origin. (uncountable) The circumstances of one’s background, ancestry, or upbringing. That which is born. Misspelling of berth.

If a word is described by an adjective, it’s probably a noun. For example, car is a noun. A car could be described as old, blue, shiny, hot, or wonderful, which are all adjectives. Not all nouns are modified by adjectives, but any word that is described by an adjective will either be a noun or pronoun.

married (noun) married name (noun) marry (verb)

verb (used with object), mar·ried, mar·ry·ing. to take in marriage: After dating for five years, I finally asked her to marry me. to perform the marriage ceremonies for (two people); join in wedlock: The minister married Susan and Ed.

Marriage is not a noun; it’s a verb.

“The wedding of our three companies took place last week.” …

A compound word is a word composed of two or more other words but with one single meaning. The compound words “somebody” and “someone” have the same meaning. They mean “some person”.

A compound word is a word made up of two or more smaller words. Compound words have their own unique meaning. There are three types of compound words: open, closed and hyphenated.

The word toothbrush is made up of two words: TOOTH and BRUSH. It’s a compound word.