Comparative Adjective are used to compare the differences between 2
Note: Superlative adjectives are used to compare 3 or more nouns.
Rules for using comparative adjectives
"Than" is usually used after the comparative adjective. -er is added to the end of a 1-syllable adjective.
Adjectives that have 2 syllables and end in - y, then change the -y to -i and add -er.
"more" or "less" is used for adjectives that have 2 syllables that do not end in -y.
"more" or "less" is used for adjectives that have 3 or more syllables.
Adjectives that end in -e, only -r is added.
Adjective that end in with a consonant, vowel, consonant - the last consonant is doubled.