The two words in the answer are anagrams of each other. Ex: Highest saucepan = top pot.
I will give you the first letter of each word.
-1. Ancient Italian country house. 5 letters each, r,m
2. Next best thing to fresh. 5 l,s
-3. Less wet jockey. 5 d,r
4. Garments to wear at British race course. 5 a,c
-5. Huge barrels. 4 v,v
-6. Pacifies shellfish. 5 c,c
-7. Far away space object. 6 r,m
-8. Packer's tribulations. 7 l,o
-9. Yellow freshwater fish. 5 a,b
-10. Retain flower container. 4 s,v