'Ubiquitous' means present everywhere or widespread, making 'widespread' the closest synonym in meaning.

'Flower' is a homophone for 'flour', sounding the same but having different meanings.

'Happiness' is a noun, while the others are not.

'Under' is the preposition in the sentence.

'Under' is the preposition that shows the relationship between the cat and the table.

'Distribute' means to allocate resources or items, making it a synonym for 'allocate'.

'Benevolent' refers to being kind and well-meaning. Hence, the synonym is 'kind'.

'Candid' means truthful and straightforward; thus, it is synonymous with 'honest'.

'Challenging' is a synonym for 'difficult', indicating something that requires effort to overcome.

'Diligent' means having or showing care and conscientiousness in one's work or duties.

'Frugal' means sparing or economical with regard to money or food.

'Hasty' means done with excessive speed; quick.

'Meticulous' means showing great attention to detail, which is synonymous with 'thorough'.

'Guide' is a synonym for 'navigate'.

'Delay' means to put off to a later time, which is synonymous with 'postpone'.

'Vigilant' means keeping careful watch for possible danger or difficulties.

'Vivid' means producing powerful feelings or strong, clear images in the mind, which is synonymous with 'bright'.

'Joyful' is a synonym of 'happy'.

'Tall' describes the noun 'building', making it an adjective.

Tall describes the noun 'building' and is therefore an adjective.

'Pessimistic' means having a negative outlook, which is the opposite of 'optimistic'.

'Opaque' means not able to be seen through, so 'transparent' is the opposite.

'Kind' is closest in meaning to 'benevolent', which refers to being well-meaning and kindly.

'Ephemeral' means lasting for a very short time, similar to 'transitory'.

'Constraint' is synonymous with 'limitation', as both refer to restrictions.

'Kind' is synonymous with 'benevolent', which means showing goodwill.

'Seperate' is spelled incorrectly; the correct spelling is 'separate'.

'Elated' means very happy or proud; therefore, the synonym is 'joyful'.

'Meticulous' means showing great attention to detail, making 'thorough' the correct synonym.

'Descend' means to go down, which is the opposite of 'ascend'.