different between jealously vs jealousy

English

jealous +? -ly

jealously (comparative more jealously, superlative most jealously)

From Middle English jalousie, from Old French jalousie, see jealous, -y. Doublet of jalousie.

jealousy (countable and uncountable, plural jealousies)

(uncountable) A state of suspicious guarding towards a spouse, lover etc., from fears of infidelity.
(countable) A resentment towards someone for a perceived advantage or superiority they hold.
- 1907, Charles J. Archard, The Portland Peerage Romance:
  Jealousy was, however, aroused among the English nobility at the favouritism shown the Dutch newcomer.
Envy towards another's possessions
- 1891, Louis Antoine Fauvelet De Bourrienne, translated by R. W. Phipps, Memoirs Of Napoleon Bonaparte:
  […] the jealousy of his foes of each other's share in the booty […].
(archaic) A close concern for someone or something, solicitude, vigilance.

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