baby (n)
/ˈbeɪ.bi/

a very young child, especially one that has not yet begun to walk or talk

young (a)
/yʌŋ/

not yet old; not as old as others

teenager (n)
/'ti:n,eiʤə/

a person who is between 13 and 19 years old

generation (n)
/ˌdʒen.əˈreɪ.ʃən/

all the people of about the same age within a society or within a particular family

adult (n)
/ə'dʌlt/

a fully grown person who is responsible for their actions

middle-aged (a)
/ˌmɪd.l̩ˈeɪdʒd/

no longer young but not yet old

newborn (a)
/nju:bɔ:n/

recently born

toddler (n)
/ˈtɒd.lər/

a very young child who is learning how to walk

mid-thirty (n)
/mid 'θə:ti/

the time of life between 30 and 40

age (n)
/eɪʤ/

a number of years that a person has lived or a thing has existed

same (a)
/seim/

not different

look (v)
/luk/

to seem

difference (n)
/'difrәnts/

the quality of being unlike or dissimilar

great (a)
/greɪt/

very good

grown-up (a)
/ˈɡroʊnˌʌp/

metally and physically adult

remarkable (a)
/rɪˈmɑr·kə·bəl/

unsual or surprising in a way that makes people notice

bright (a)
/brɑɪt/

intelligent and quick to learn

tall (a)
/tɔːl/

of more than average height, or of a particular height

fairly (r)
/ˈfeər·li/

in a way that is right and reasonable to treat other people

seem (v)
/siːm/

to appear to be something, or to appear to have a particular quality