Here are the stages of language development
Stage 1: (0-6 months) Cooing or pre-talking stage
Stage 2: (6-8 months) Babbling
Stage 3: (9-18 months) Holophrastic stage
Stage 4: (18-24 months) Two-word stage
Stage 5: (24-30 months) Telegraphic stage
Stage 6: (30+ months) Later multiword stage