Before you start teaching or practicing yoga you need to become comfortable with some common words used in yoga:

Asanas:  different postures or positions (i.e. tadasana: tad = mountain; asana = pose)

Adho Mukha Svanasana: downward facing dog pose

Baddhakonasana: cobbler pose

Dandasana:staff pose

Gomukhasana: head-of -cow pose

Marcicyasana: simple twist catching the arms behind

Savasana:corpse pose

Supta: lying down or reclining

Supta Baddhakonasana: lying down in baddhakonasana

Sutras:  basic beliefs or tenents (yoga consists of eight sutras)

Tadasana: mountain pose

Urdhva Prasarita Padasana: legs stretched to 90 degrees

Uttanasana: forward extension

Utthita: extended

Utthita Parsvakonasana: extended lateral angle pose

Utthita Trikonasana: extended triangle pose

Vrksasana: tree pose

Virabhadrasana II: warrior pose II

Virasana: hero pose