Moon conjunct Jupiter in a natal chart puts the Moon, which governs your inner weather and what you need to feel safe, right alongside Jupiter, the planet of growth, generosity and excess. The two act as one thing. Your emotional responses and your instinct to expand are fused: you feel things on a large scale, you tend towards generosity almost without deciding to, and your sense of security is tied to something bigger than just the room you are in.
Spisce counts this conjunction when the two are within 8 degrees of each other; the closer they sit, the louder the blend. At 2 degrees apart, you barely know where one ends and the other begins. At 7 degrees, the same tendencies are there, a little softer.