diff --git a/registry/registry.go b/registry/registry.go
index 748ed5549..584028551 100644
--- a/registry/registry.go
+++ b/registry/registry.go
@@ -10,8 +10,8 @@ type Registrar interface {
 	Deregister(ctx context.Context, service *ServiceInstance) error
 }
 
-// Discovery is service discovery.
-type Discovery interface {
+// Discoverer is service discovery.
+type Discoverer interface {
 	// Service return the service instances in memory according to the service name.
 	Fetch(ctx context.Context, serviceName string) ([]*ServiceInstance, error)
 	// Watch creates a watcher according to the service name.
diff --git a/transport/grpc/client.go b/transport/grpc/client.go
index 8f6131686..5330ab228 100644
--- a/transport/grpc/client.go
+++ b/transport/grpc/client.go
@@ -39,7 +39,7 @@ func WithMiddleware(m middleware.Middleware) ClientOption {
 }
 
 // WithDiscovery with client registry.
-func WithDiscovery(r registry.Discovery) ClientOption {
+func WithDiscovery(r registry.Discoverer) ClientOption {
 	return func(o *clientOptions) {
 		o.discovery = r
 	}
@@ -57,7 +57,7 @@ type clientOptions struct {
 	endpoint   string
 	timeout    time.Duration
 	middleware middleware.Middleware
-	discovery  registry.Discovery
+	discovery  registry.Discoverer
 	grpcOpts   []grpc.DialOption
 }
 
diff --git a/transport/grpc/resolver/discovery/builder.go b/transport/grpc/resolver/discovery/builder.go
index 5d7b5c1d4..aa063a519 100644
--- a/transport/grpc/resolver/discovery/builder.go
+++ b/transport/grpc/resolver/discovery/builder.go
@@ -21,15 +21,15 @@ func WithLogger(logger log.Logger) Option {
 }
 
 type builder struct {
-	registry registry.Discovery
-	logger   log.Logger
+	discoverer registry.Discoverer
+	logger     log.Logger
 }
 
 // NewBuilder creates a builder which is used to factory registry resolvers.
-func NewBuilder(r registry.Discovery, opts ...Option) resolver.Builder {
+func NewBuilder(r registry.Discoverer, opts ...Option) resolver.Builder {
 	b := &builder{
-		registry: r,
-		logger:   log.DefaultLogger,
+		discoverer: r,
+		logger:     log.DefaultLogger,
 	}
 	for _, o := range opts {
 		o(b)
@@ -38,7 +38,7 @@ func NewBuilder(r registry.Discovery, opts ...Option) resolver.Builder {
 }
 
 func (d *builder) Build(target resolver.Target, cc resolver.ClientConn, opts resolver.BuildOptions) (resolver.Resolver, error) {
-	w, err := d.registry.Watch(context.Background(), target.Endpoint)
+	w, err := d.discoverer.Watch(context.Background(), target.Endpoint)
 	if err != nil {
 		return nil, err
 	}