For the questions you've provided:

1. For the first set of words:
- hold
- family
- celebrate
- calm

The highlighted parts are pronounced as follows:
- "l" in hold is pronounced as /hɒld/
- "l" in family is pronounced as /ˈfæmɪli/
- "l" in celebrate is pronounced as /ˈsɛlɪbreɪt/
- "l" in calm is pronounced as /kɑːm/

The word **calm** has the highlighted part pronounced differently (silent 'l') compared to the others, where 'l' is pronounced.

2. For the second set of words:
- alone
- foreign
- basic
- awesome

The main stress placement is different for:
- alone: stress on the second syllable (a-LONE)
- foreign: stress on the first syllable (FOR-eign)
- basic: stress on the first syllable (BA-sic)
- awesome: stress on the first syllable (AW-some)

The word **alone** has the main stress on a different syllable compared to the others.

For the second question in the second set:
1. For the words:
- parachute
- interest
- following
- exhausted

The primary stress placement is:
- parachute: stress on the third syllable (par-a-CHUTE)
- interest: stress on the first syllable (IN-terest)
- following: stress on the first syllable (FOLLOW-ing)
- exhausted: stress on the second syllable (ex-HAUST-ed)

The word **parachute** has the main stress placed differently compared to the others.

In summary:
1. First question group: **calm**
2. Second question group: **alone** and **parachute** (for the second group of words) depending on the specific choice asked.