Not necessarily. While this is true for some noun/verb pairs (allied, address), it is not for others (abuse - both on second, advocate - both on first).
Homograph is stressed on the first syllable. A simple way of testing which syllable is stressed is by saying the word aloud. Look for the syllable that you naturally emphasise more in your speech.
'Cho', the first syllable, is the stressed one.
Footprint is stressed on the first syllable.
Captive is stressed on the first syllable.
The first syllable in "dangerous" is stressed.
It is both. The spelling is the same, but the pronunciation is different. For the verb form, the second syllable is stressed. For the noun form, the first syllable is stressed.
In the word "lawyer," the first syllable "law" is stressed.
It is not entirely clear whether you are asking which syllable is stressed or what the first syllable is. The stressed syllable is the first syllable: sev.
District is stressed on the first syllable.
Saunter is stressed on the first syllable.
Accurate is stressed on the first syllable.
The stressed syllable in "injure" is the first syllable "in-".