General need:
* Angen: This is the most common word for "need" and can be used in many situations.
* Example: "Mae angen bwyd arnaf." (I need food.)
Specific need:
* Rhaid: This word implies a stronger sense of necessity or requirement.
* Example: "Rhaid i mi fynd i'r siop." (I must go to the shop.)
Need for something specific:
* Eisiau: This word means "want" or "desire" and can also be used to express a need.
* Example: "Rwy'n eisiau diod." (I need a drink.)
Other words:
* Gofyn: This word means "ask" and can be used to express a need, especially if you're asking for something.
* Example: "Rwy'n gofyn am gymorth." (I need help.)
* Diffyg: This word means "lack" or "shortage" and can be used to express a need for something that is missing.
* Example: "Mae diffyg amser gen i." (I lack time.)
It's best to choose the word that fits the context best.