A cherub is an angel. This word is often used to describe a putti, or baby/toddler angel, in art.
A cherub is a person with an innocent face. The Hebrew-style plural of cherub is "cherubim" - "cherubim and seraphim".
"Cherub" is the singular. "Cherubim" is the plural.
The word 'cherubim' is the plural form of the singular noun cherub.There are two accepted plural forms for 'cherub', cherubim and cherubs.
Cherubim (sing: cherub) are mentioned in several books of the Bible. Most of these mentions are of an ornamental statue with wings, such as the two cherubim that surrounded the mercy seat.In Genesis, the Lord set a cherub with a blazing sword to stop anyone from returning to the Garden of Eden. In Psalm 18, God rode upon a cherub. If cherubim exist, they would seem capable of harming a person, but the Bible never describes such an event
There are several possible plural forms of the English word cherub, which is a word of Hebrew origin. The one I think you are referring to is cherubim, which is derived directly from the Hebrew plural. Cherubs and cherubims also occur in English.
The difference between cherubim and angels is that angels are spirits that have already lived or not received a body yet while cherubim were sculpted on the arc of covenant as guardians. You can get information about Cherub and Angels at the Wikipedia.
St. Thomas Aquinas, theorized that Satan is a fallen Cherub and that Satan disguised himself as a cherub to trick the Angel Uriel. Uriel is a good Angel and guardian whose responsibilities include guarding the planet earth. St. Thomas says [ST 1.63.7.1r], "Cherubim is interpreted 'fullness of knowledge,' while 'Seraphim' means 'those who are on fire,' or 'who set on fire.' Consequently Cherubim is derived from knowledge; which is compatible with mortal sin; but Seraphim is derived from the heat of charity, which is incompatible with mortal sin. Therefore the first angel who sinned is called, not a Seraph, but a Cherub.
Ezekiel 10:8-14New King James Version (NKJV)8 The cherubim appeared to have the form of a man's hand under their wings.9 And when I looked, there were four wheels by the cherubim, one wheel by one cherub and another wheel by each other cherub; the wheels appeared to have the color of a beryl stone. 10 As for their appearance, all four looked alike as it were, a wheel in the middle of a wheel. 11 When they went, they went toward any of their four directions; they did not turn aside when they went, but followed in the direction the head was facing. They did not turn aside when they went. 12 And their whole body, with their back, their hands, their wings, and the wheels that the four had, were full of eyes all around. 13 As for the wheels, they were called in my hearing, Wheel. 14 Each one had four faces: the first face was the face of a cherub, the second face the face of a man, the third the face of a lion, and the fourth the face of an eagle.
The plural possessive form of "cherubim" is "cherubim's."
The exact end point of the Cherubim can vary depending on the source, but traditionally they are considered to be the second highest rank of angels in the hierarchy, below only the Seraphim. They are often depicted as having four faces and four wings.
First Sphere 1.1 Seraphim (plural of Seraph)1.2 Cherubim (plural of Cherub)1.3 Thrones or OphanimSecond Sphere 2.1 Dominions2.2 Virtues2.3 Powers or AuthoritiesThird Sphere (highest) 3.1 Principalities or Rulers3.2 Archangels
First Sphere 1.1 Seraphim (plural of Seraph)1.2 Cherubim (plural of Cherub)1.3 Thrones or OphanimSecond Sphere 2.1 Dominions2.2 Virtues2.3 Powers or AuthoritiesThird Sphere (highest) 3.1 Principalities or Rulers3.2 Archangels