Synastry is the term used to describe the comparison of two birth charts to determine the compatibility and potential relationship dynamics between two individuals.

Trines are considered the most harmonious and beneficial aspects in astrology, as they represent easy flow and support between two planets or points in a birth chart.

A conjunction occurs when two planets or points in a birth chart are within a certain degree of each other, creating a strong connection and influence between them.

Oppositions are considered the most challenging and difficult aspects in astrology, as they represent tension, conflict, and polarity between two planets or points in a birth chart.

An opposition occurs when two planets or points in a birth chart are 180 degrees apart, creating a strong tension and polarity between them.

Sextiles are considered to be neutral or balanced aspects in astrology, as they represent opportunity, potential, and harmony between two planets or points in a birth chart.

A square occurs when two planets or points in a birth chart are 90 degrees apart, creating a challenging and tense connection between them.

Trines are considered to be supportive and harmonious aspects in astrology, as they represent easy flow, cooperation, and understanding between two planets or points in a birth chart.

A trine occurs when two planets or points in a birth chart are 120 degrees apart, creating a harmonious and supportive connection between them.

Squares are considered to be challenging and disruptive aspects in astrology, as they represent tension, conflict, and obstacles between two planets or points in a birth chart.

A sextile occurs when two planets or points in a birth chart are 60 degrees apart, creating a supportive and harmonious connection between them.

Sextiles are considered to be neutral or balanced aspects in astrology, as they represent opportunity, potential, and harmony between two planets or points in a birth chart.

A quincunx occurs when two planets or points in a birth chart are 150 degrees apart, creating a challenging and disruptive connection between them.

Trines are considered to be supportive and harmonious aspects in astrology, as they represent easy flow, cooperation, and understanding between two planets or points in a birth chart.

A semi-sextile occurs when two planets or points in a birth chart are 45 degrees apart, creating a supportive and harmonious connection between them.