المَلَكُ

A word in the Arabic language will either be 1) a verb or 2) a noun or 3) a particle – المَلَكُ is a noun

A noun may either be 1) Definite or indefinite 2) Masculine or feminine 3) Singular, dual or plural 4) Nominative, accusative or genitive

المَلَكُ is the natural state of this definite noun and it is in this state ( مَرْفُوْعٌ) when the noun is: 1) the subject المُبْتَدَأُ or 2) the predicate الخَبَرُ or 3) اسْمُ كَانَ or 4) خَبَرُ إِنَّ or 5) الفَاعِلُ subject of a verb in the active voice or 6) نَائِبُ الفَاعِلِ subject of a verb in the passive voice or 7) it’s a noun of dependent declension a) نَعْتٌ / صِفَطٌ adjectives b) التَّوْكِيْدُ emphatic c) المَعْطُوْفٌ conjunction d) البَدَلُ synonym

Angels

To possess, become the owner of, conquer, have control, rule, take a wife, have power, reign, be capable of, able to obtain, can do, can avail, have authority, hold.

مَعْرِفَةٌمُفْرَدٌمُذَكَّرٌمَرْفُوْعٌم ل كبَاب ضَرَبَمَلَكَ يَمْلِكُفَعَلٌاسْمٌاِسْمُ الجِنْسِ
DefiniteSingularMasculineNominativeRootAngelsضPatternNounGeneric or common Noun
Surah/Below are the 2 verses in the holy Quran containing the nounالمَلَكُ
Verse 
69-17
89-22and your Lord comes with the angels in rowsوَجَاءَ رَبُّكَ وَالمَلَكُ صَفًّا صَفًّا