As far as Kṛṣṇa's transcendental qualities are concerned, they can be divided into three groups: qualities pertaining to His transcendental body, qualities pertaining to His transcendental speech, and qualities pertaining to His transcendental mind.
Kṛṣṇa's age, His transcendental bodily features, His beauty, and His mildness are qualities pertaining to His body. There is no difference between Kṛṣṇa and His body, and therefore the transcendental features pertaining to His body are the same as Kṛṣṇa Himself. But because these qualities stimulate the devotee's ecstatic love, they have been analyzed as separate causes of that love. To be attracted by the qualities of Kṛṣṇa means to be attracted by Kṛṣṇa Himself, because there is no real distinction between Kṛṣṇa and His qualities. Kṛṣṇa's name is also Kṛṣṇa. Kṛṣṇa's fame is also Kṛṣṇa. Kṛṣṇa's entourage is also Kṛṣṇa. Kṛṣṇa and everything related with Kṛṣṇa which gives stimulation to love of Kṛṣṇa are all Kṛṣṇa, but for our understanding these items can be considered separately.
Kṛṣṇa is the reservoir of all transcendental pleasure. Therefore, the impetuses to love of Kṛṣṇa, although seemingly different, are not actually distinct from Kṛṣṇa Himself. In the technical Sanskrit terms, such qualities as Kṛṣṇa's name, fame, etc., are accepted both as reservoirs of and stimulation for love of Kṛṣṇa.
Kṛṣṇa's age is considered in three periods: from His appearance day to the end of His sixth year is called kaumāra; from the beginning of the sixth year up to the tenth year is called paugaṇḍa; and from the tenth to the sixteenth year is called kaiśora; after the beginning of the sixteenth year, Kṛṣṇa is called a yauvana or a youth, and this continues with no change.