Whether desire is wholesome or unwholesome is an important consideration.
The Buddha taught of both wholesome and unwholesome forms of desire.
Here is the Pali and references to where and how each form of desire is used in the Pali Suttas:Chanda: intention, desire, will.
1. As an ethically neutral psychological term, in the sense of 'intention', it is one of those general mental properties cetasika Tab. II taught in the Abhidhamma, the moral quality of which is determined by the character of the intention cetanā associated therewith. The Com. explains it as 'a wish to do' kattu-kamyatā-chanda If intensified, it acts also as a 'predominance condition' see: paccaya 3.
2. As an evil quality it has the meaning of 'desire', and is frequently coupled with terms for 'sensuality', 'greed', etc., for instance:kāma-cchanda, sense-desire', one of the 5 hindrances see: nīvarana chanda-rāga 'lustful desire' see: kāma It is one of the 4 wrong paths see: agati.
3. As a good quality it is a righteous will or alertness dhamma-chanda and occurs, e.g. in the formula of the 4 right efforts see: padhāna The Bhikkhu rouses his will chandam janeti...; If intensified, it is one of the 4 roads to power see: iddhipāda http://what-buddha-said.net/library/Bud ... dic3_c.htm Tanhā: lit. 'thirst': 'craving'
, is the chief root of suffering, and of the ever-continuing cycle of rebirths.;What, o Bhikkhus, is the origin of suffering? It is that craving which gives rise to ever-fresh rebirth and, bound up with pleasure and lust, now here, now there, finds ever fresh delight. It is the sensual craving kāma-tanhā the craving for existence bhava-tanhā the craving for non-existence vibhava-tanhā D. 22. T. is the 8th link in the formula of the dependent origination paticcasamuppāda. Cf. sacca.
Corresponding to the 6 sense-objects, there are 6 kinds of craving craving for visible objects, for sounds, odours, tastes, bodily contacts, mental contacts rūpa-, sadda-, gandha-, rasa-, photthabba-, dhamma-tanhā M. 9; D. 15
Corresponding to the 3-fold existence, there are 3 kinds: craving for sensual existence kāma-tanhā for fine-material existence rūpa-tanhā for immaterial existence arūpa-tanhā D. 33
There are 18 'thought-channels of craving' tanhā-vicarita induced internally, and 18 induced externally; and as occurring in past, present and future, they total 108; see A. IV, 199; Vibh., Ch. 17 Khuddakavatthu-Vibhanga.
According to the dependent origination, craving is conditioned by feeling; on this see D. 22 section on the 2nd Truth.
Of craving for existence bhava-tanhā it is said A. X, 62:;No first beginning of the craving for existence can be perceived, o Bhikkhus, before which it was not and after which it came to be. But it can he perceived that craving for existence has its specific condition. I say, o Bhikkhus, that also craving for existence has its condition that feeds it sāharam and is not without it. And what is it? 'Ignorance', one has to reply.; - Craving for existence and ignorance are called;the outstanding causes that lead to happy and unhappy destinies courses of existence; see: Vis.M XVII, 36-42.
The most frequent synonyms of tanhā are rāga and lobha see: mūla .http://what-buddha-said.net/library/Bud ... dic3_t.htm