Grammatical definition: All you need is the plan...
"All you need is the plan, the road map, and the courage to press on to your destination."

- all = determiner
- you = pronoun
- need = verb
- is = verb
- the = determiner
- plan = noun
- the = determiner
- road = adjective
- map = noun
- and = conjuction
- the = determiner
- to press = verb (infinitive)
- on = preposition
- to = preposition
- your = pronoun
- destination = noun

Could you tell me if I defined correctly?

Question

Grammatical definition: All you need is the plan...
"All you need is the plan, the road map, and the courage to press on to your destination."

- all = determiner
- you = pronoun
- need = verb
- is = verb
- the = determiner
- plan = noun
- the = determiner
- road = adjective
- map = noun
- and = conjuction
- the = determiner
- to press = verb (infinitive)
- on = preposition
- to = preposition
- your = pronoun
- destination = noun

Could you tell me if I defined correctly?

Answer

road is a noun acting as an adjective, because the road map = the map of the road.
So calling road an adjective is probably ok, but nouns that modify other nouns might also be called adjectival nouns, or noun modifiers, or attributive nouns
You missed courage
Good job!

Answer

Yes, you have defined everything correctly.  Well done.

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