1. salt
2. brackish, briny, saliferous, saline, salty, saltish, tasteful, sharp
3. salty

1. tasteful, compound
2. chemical compound, table salt
3. common salt, flavorer, flavourer, flavoring, flavouring, seasoner, seasoning, Strategic Arms Limitation Talks
4. SALT, diplomacy, diplomatic negotiations, saltiness

1. salinity, taste, taste sensation, gustatory sensation, taste perception, gustatory perception, season
2. flavor, flavour, sprinkle
3. splash, splosh, spice
4. spice up, preserve
4. keep