Refer to relevant Zulu noun phrases to support your statement about the difference between productive and unproductive noun phrases.

Productive noun phrases in Zulu typically consist of a noun followed by a descriptive word or phrase that adds more information about the noun. For example, "indlu enkulu" (big house) or "umfana omncane" (small boy) are productive noun phrases that provide additional details about the noun.

On the other hand, unproductive noun phrases in Zulu may simply consist of a noun without any additional descriptive words or phrases. For example, "isigodi" (school) or "umuzi" (village) are unproductive noun phrases that do not provide any further information about the noun.

Productive Noun Phrases

- Noun + Descriptive: isibongo esikhulu (a big praise poem)
- Noun + Possessive: izindlu zikaBaba (Father's houses)
- Noun + Demonstrative: lokumama ohle (all these cars)
- Noun + Relative: izinsizwa ezimhlophe (white boys)

These noun phrases can be further expanded by adding additional modifiers, such as adjectives or possessive pronouns. For example, "isibongo esikhulu" can become "isibongo esikhulu esiyindala" (an old big praise poem).

Unproductive Noun Phrases

- Noun + Conjunction + Noun: indaba nezingoma (stories and songs)
- Noun + Preposition + Noun: imoto emgwaqweni (a car on the road)
- Noun + Adverb + Noun: indlu phansi (a house down)

These noun phrases cannot be expanded by adding additional modifiers. For example, "indaba nezingoma" cannot become "indaba ezinezingoma" (stories with songs).

Difference

Productive noun phrases can be expanded by adding additional modifiers, while unproductive noun phrases cannot. This difference is due to the fact that productive noun phrases have a more complex structure than unproductive noun phrases.