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Vocabulary Building:
Nouns substantive used in GCSE Latin, all tiers, introduced in the form of "This thing"
In case these pronouns are not yet familiar, here is the declension of the nominative and genitive of this and these.

Hic - masculine
Haec - feminine
Hoc - neuter
Hujus - genitive
HI - masc. plural
HAE - fem plural
HAEC - neut plural
horum - masc gen. plural
harum - fem gen plural
horum - neut plural

Note on pronunciation. Hic haec and hoc should have a double c before a vowel.

However, in the vocab list recited here, I have only given a single c, to make the form of the nouns substantive clearer for a beginner.
A Roman would have said Hoc Cest instead of hoc est, and haec Carbor, not haec arbor. When you are saying these yourself, you might want to try doing this.
Latin