Used to

Used to is used to express and refer to past habits/repeated actions/situations/states which have changed or not true anymore.

Positive, negative and question forms:

+ Noun (subject) + used to + infinitive + noun (object)

- Noun (subject) + did + not + use to + infinitive + noun (object)

? Did + noun (subject) + use to + infinitive + noun (object)

Would

Would is also used to express and refer to repeated actions which have changed or not true anymore.

Positive, negative and question forms:

+ Noun (subject) + would + infinitive + noun (object).

- Noun (subject) + would not + infinitive + noun (object).

? Would + noun (subject) + infinitive + noun (object)