As nouns the difference between hallage and haylage
is that hallage is (legal|obsolete) a fee or toll paid for goods sold in a hall while haylage is grass (often cut longer than for silage) partially dried and ensiled to exclude air, or plastic-wrapped in large bales.
haylage
English
Noun
Grass (often cut longer than for silage) partially dried and ensiled to exclude air, or plastic-wrapped in large bales.